Interview Questions.

Q1. A Can Do A Piece Of Work In 12 Days. He Worked For 15 Days And Then B Completed The Remaining Work In 10 Days. Both Of Them Together Will Finish It In?

15/25 + 10/x = 1 => x = 25

1/25 + 1/25 = 2/25

25/2 = 12 half of days.

Q2. A Laborer Is Engaged For 30 Days On The Condition That He Receives Rs.25 For Each Day He Works And Is Fined Rs.7.50 For Each Day Is Absent. He Gets Rs.425 In All. For How Many Days Was He Absent?

30 * 25 = 750

                425

             -----------

                 325

25 + 7.50 = 32.5

325/32.5 = 10.

Q3. [(523 + 27) * (187 - 35) / (424 + 16)] / [110/22 Of (2 * 38)] = ?

[(523 + 27) * (187 - 35) / (424 + 16)] / [110/22 of (2 * 38)] 

= [(550 * 152) / 440] / [(110/44) * 38]

= (five * 38)/(5/2 * 38) = 2.

Q4. A Man Can Row At five Km/hr In Still Water, If The River Is Running At 1 Km/hr It Takes Him 75 Minutes To Row To A Place And Back. How Far Is The Place?

Speed downstream = (five+1)km/hr = 6 km/hr

Speed upstream = (five-1)km/hr = 4 km/hr 

Let the specified distance be x km. 

Then x/6 + x/four = seventy five/60 = 5/four => (2x + 3x) =15 => x =3. 

Required distance = three km.

Q5. Rs.1170 Is Divided So That four Times The First Share, Thrice The 2d Share And Twice The Third Share Amount To The Same. What Is The Value Of The Third Share?

A+B+C = 1170

4A = 3B = 2C = x

A:B:C = 1/4:1/3:1/2 = 3:four:6

6/thirteen * 1170 = Rs.540.

Q6. A three hundred Meter Long Train Crosses A Platform In 39 Seconds While It Crosses A Signal Pole In 18 Seconds. What Is The Length Of The Platform?

Speed = [300 / 18] m/sec = 50/three m/sec.

Let the length of the platform be x meters.

Then, x + 300 / 39 = 50/three 

3(x + 300) = 1950 è x = 350m.

Q7. The Radius Of A Cylindrical Vessel Is 7cm And Height Is 3cm. Find The Whole Surface Of The Cylinder?

R = 7  h = 3

2πr(h + r) = 2 * 22/7 * 7(10) = 440.

Q8. The Sum Of The Two Digits Of A Number Is

Any two digit quantity can be written as (10P + Q), in which P is the digit inside the tens location and Q is the digit inside the gadgets vicinity.

P + Q = 10 ----- (1)

(10Q + P) - (10P + Q) = fifty four

9(Q - P) = 54

(Q - P) = 6 ----- (2)

Solve (1) and (2) P = 2 and Q = 8

The required number is = 28

Q9. In A Game Of Billiards, A Can Give B 20 Points In 60 And He Can Give C 30 Points In 6

A scores 60 whilst B rating 40 and C ratings 30.

The wide variety of points that C scores while B ratings 100 = (one hundred * 30)/40 = 25 * 3 = seventy five.

In a recreation of one hundred factors, B gives (100 - 75) = 25 points to C.

Q10. A Brick Measures 20 Cm * 10 Cm * 7.5 Cm How Many Bricks Will Be Required For A Wall 25 M * 2 M * zero.75 M?

25 * 2 * 0.Seventy five = 20/a hundred * 10/100 * 7.Five/one hundred * x

25 =  1/one hundred * x => x = 25000.

Q11. The Probability That A Speaks Truth Is three/five And That Of B Speaking Truth Is 4/

If each agree mentioning the identical reality, both both of them communicate fact of both communicate fake.

Probability = 3/5 * four/7 + 2/five * 3/7

= 12/35 + 6/35 = 18/35.

Q12. The Sum Of Five Consecutive Odd Numbers Of Set P Is 43

Let the five consecutive bizarre numbers of set p be 2n - 3, 2n - 1, 2n + 1, 2n + three, 2n + 5.

Sum of those 5 numbers

= 2n - three + 2n - 1 + 2n + 1 + 2n + 3 + 2n + five

= 10n + 5 = 435 => n = forty three

Largest wide variety of set p = 2(forty three) + 5 = 91

The biggest range of set q = ninety one + forty five = 136

=> The 5 numbers of set q are 132, 133, 134, 135, 136.

Sum of above numbers = 132 + 133 + 134 + a hundred thirty five + 136 = 670.

Q13. A Train Crosses A Platform Of a hundred and twenty M In 15 Sec, Same Train Crosses Another Platform Of Length one hundred eighty M In 18 Sec. Then Find The Length Of The Train?

Length of the teach be ‘X’

X + one hundred twenty/15 = X + 180/18

6X + 720 = 5X + 900

X = 180m .

Q14. Which Of The Following Groups Of Fractions Is In Descending Order?

The fractions taken into consideration are 8/15 9/thirteen 6/11

To examine them we make the denominators the same. So the fractions are

(8 * 13 * eleven)/2145, (9 * 15 * 11)/2145 and (6 * 15 * 13)/2145

1144/2145, 1485/2145 and 1170/2145

so in descending order the fractions could be 

1485/2145, 1170/2145 and 1144/2145 i.E., nine/thirteen , 6/11 , eight/15.

Q15. There Were Two Candidates In An Election. Winner Candidate Received 62% Of Votes And Won The Election By 288 Votes. Find The Number Of Votes Casted To The Winning Candidate?

W = 62%    L = 38%

sixty two% - 38% = 24%

24% -------- 288

sixty two% -------- ? => 744.

Q16. Sides Of A Rectangular Park Are In The Ratio 3: 2 And Its Area Is 3750 Sq M, The Cost Of Fencing It At 50 Ps Per Meter Is?

3x * 2x = 3750 => x = 25

2(75 + 50) = 250 m

250 * 1/2 = Rs.125.

Q17. A Rectangular Field Has Area Equal To a hundred and fifty Sq M And Perimeter 50 M. Its Length And Breadth Must Be?

2(l + b) = 50 => l + b = 25

l – b = five

l = 15   b = 10.

Q18. Three/20 Is What Percent Of 12/25?

Let the specified percentage be x%.

3/20 = x% of 12/25 => three/20 = x/one hundred * 12/25

=> 12x = (three hundred * 25)/20 => x = (25 * 25)/20

=> x = 31.25%.

Q19. How Many Minimum Number's Of Whole Square Slabs Are Required For Paving The Floor 12.96 Meters Long And three.Eighty four Meters Side?

HCF of 384, 1296 = 48

forty eight * 48 * x = 384 * 1296

x = 216.

Q20. A Wire In The Form Of A Circle Of Radius 3.5 M Is Bent In The Form Of A Rectangule, Whose Length And Breadth Are In The Ratio Of 6 :

The circumference of the circle is equal to the permeter of the rectangle. 

Let l = 6x and b = 5x 2(6x + 5x) = 2 * 22/7 * three.5 

 =>  x = 1 

Therefore l = 6 cm and b = five cm Area of the rectangle = 6 * 5 = 30 cm2.

Q21. Find The Roots Of The Quadratic Equation: 2x2 + 3x - nine = 0?

2x2 + 6x - 3x - nine = 0

2x(x + 3) - three(x + 3) = zero

(x + three)(2x - 3) = 0

=> x = -3 or x = three/2.

Q22. A Bank Offers 5% C.I. Calculated On Half-yearly Basis . A Customer Deposits Rs. 1600 Each On 1st January And 1st July Of A Year. At The End Of The Year, The Amount He Would Have Gained By Way Of Inter

Amount = [1600 * (1 + 5/(2 * 100)2 + 1600 * (1 + 5/(2 * 100)]

= [1600 * forty one/forty(forty one/forty + 1) 

= [(1600 * 41 * 81)/(40 * 40)] = Rs. 3321.

C.I. = 3321 - 3200 = Rs. 121.

Q23. The Sum Of Three Consecutive Integers Is

Three consecutive numbers can be taken as (P - 1), P, (P + 1).

So, (P - 1) + P + (P + 1) = 102

3P = 102 => P = 34.

The lowest of the 3 = (P - 1) = 34 - 1 = 33.

Q24. Two Pipes Can Separately Fill A Tank In 20 And 30 Hours Respectively. Both The Pipes Are Opened To Fill The Tank But When The Tank Is Full, A Leak Develops In The Tank Through Which One-0.33 Of W

1/20 + 1/30 = 1/12

1 + 1/3 = 4/three

1 --- 12

4/3 --- ?

Four/three * 12 = sixteen hrs.

Q25. A Room Is four Meters 37 Cm Long And 3 Meters 23cm Broad. It Is Required To Pave The Floor With Minimum Square Slabs. Find The Number Of Slabs Required For This Purpose?

HCF of 323, 437 = 19

323 * 437 = 19 * 19 * x

x = 391.

Q26. The Equal Amounts Of Money Are Deposited In Two Banks Each At 15% Per Annum For three.Five Years And five Years Respectively. If The Difference Between Their Interests Is Rs.144, Find The Each Sum?

(P*5*15)/a hundred - (P*3.Five*15)/100 = a hundred and forty four

75P/one hundred –  fifty two.5P/one hundred = one hundred forty four

22.5P = one hundred forty four * a hundred 

=> P = Rs.640.

Q27. The Dimensions Of A Room Are 25 Feet * 15 Feet * 12 Feet. What Is The Cost Of White Washing The Four Walls Of The Room At Rs. 5 Per Square Feet If There Is One Door Of Dimensions 6 Feet * 3 Feet And T

Area of the four partitions = 2h(l + b)

Since there are doors and windows, area of the partitions = 2 * 12 (15 + 25) - (6 * three) - three(4 * 3) = 906 squaretoes.

Total price = 906 * 5 = Rs. 4530.

Q28. A Train Speeds Past A Pole In 15 Seconds And A Platform one hundred M Long In 25 Seconds. Its Length Is?

Let the length of the educate be x meters and its velocity be y m/sec.

They, x / y = 15 => y = x/15 

x + 100 / 25 = x / 15 

 x = 150 m. 

Q29. The Time Taken By A Man To Row His Boat Upstream Is Twice The Time Taken By Him To Row The Same Distance Downstream. If The Speed Of The Boat In Still Water Is forty two Kmph, Find The Speed Of The Stream?

The ratio of the instances taken is 2:1.

The ratio of the rate of the boat in nevertheless water to the speed of the flow = (2+1)/(2-1) = three/1 = three:1

Speed of the stream = forty two/three = 14 kmph.

Q30. If Rs.3250 Be Divided Among Ram, Shyam And Mohan In The Ratio Of half:1/3:1/4 Then The Share Of Each Are?

Half:1/3:1/4 = 6:4:three

Ram = 6/13 * 3250 = 1500

Shyam = four/13 * 3250 = 1000

Mohan = three/thirteen * 3250 = 750.

Q31. 4000 Was Divided Into Two Parts Such A Way That When First Part Was Invested At 3% And The Second At 5%, The Whole Annual Interest From Both The Investments Is?

(x*three*1)/100 + [(4000 - x)*5*1]/100 = a hundred and forty four

3x/a hundred + 2 hundred – 5x/100 = a hundred and forty four

2x/a hundred = fifty six è x = 2800.

Q32. Two Cars Cover The Same Distance At The Speed Of 60 And sixty four Kmps Respectively. Find The Distance Traveled By Them If The Slower Car Takes 1 Hour More Than The Faster Car?

60(x + 1) = 64x

X = 15

60 * sixteen = 960 km.

Q33. The Tax On A Commodity Is Diminished By 20% But Its Consumption Is Increased By 10%. Find The Decrease Percent In The Revenue Derived From It?

100 * 100 = ten thousand

80 * one hundred ten = 8800

ten thousand------- 1200

one hundred ------- ? = 12%.

Q34. Two Trains Each 250 M In Length Are Running On The Same Parallel Lines In Opposite Directions With The Speed Of 80 Kmph And 70 Kmph Respectively. In What Time Will They Cross Each Other Completely?

D = 250 m + 250 m = 500 m

RS = eighty + 70 = one hundred fifty * five/18 = 125/three

T = 500 * three/a hundred twenty five = 12 sec.

Q35. P, Q And R Have Rs.6000 Among Themselves. R Has Two-thirds Of The Total Amount With P And Q. Find The Amount With R?

Let the amount with R be Rs.R

r = 2/3 (total quantity with P and Q)

r = 2/3(6000 - r) => 3r = 12000 - 2r

=> 5r = 12000 => r = 2400.

Q36. How Many Seconds Will A Train 100 Meters Long Take To Cross A Bridge a hundred and fifty Meters Long If The Speed Of The Train Is 36 Kmph?

D = a hundred + a hundred and fifty = 250

S = 36 * 5/18 = 10 mps

T = 250/10 = 25 sec.

Q37. The Sum Of The Present Ages Of Two Persons A And B Is 6

A + B = 60, A = 2B

2B + B = 60 => B = 20 then A = forty.

5 years, their a long time will be 45 and 25.

Sum of their a while = forty five + 25 = 70.

Q38. 1860 + 4/7 Of 21.21 - forty one.Four = ?

1860 + 4/7 of 21.21 - 41.4 = 1860 + four(3.03) - forty one.Four

= 1860 + 12.12 - 41.Four = 1872.12 - 41.Four

= 1830.72.

Q39. If The Sides Of A Triangle Are 26 Cm, 24 Cm And 10 Cm, What Is Its Area?

The triangle with sides 26 cm, 24 cm and 10 cm is proper angled, wherein the hypotenuse is 26 cm.

Area of the triangle = half * 24 * 10 = 120 cm2.

Q40. Sixty four Is What Percent Of eighty?

Let x percentage of eighty be 64.

Eighty * x/a hundred = 64 => x = (64 * 100)/eighty => x = eighty.

Eighty% of 80 is 64.

Q41. If The Length, Breadth And The Height Of A Cuboid Are In The Ratio 6: 5: 4 And If The Total Surface Area Is 33300 Cm2, Then Length Breadth And Height In Cms, Are Respectively?

Length = 6x 

Breadth = 5x 

Height = 4x in cm 

Therefore, 2(6x × 5x + 5x × 4x + 6x × 4x) = 33300 

148x2 = 33300 

=> x2 = 33300/148 = 225 

=> x = 15. 

Therefore, Length = 90cm, 

Breadth = 75cm, 

Height = 60cm 

ninety, 75 , 60 cm.

Q42. The Denominator Of A Fraction Is 1 Less Than Twice The Numerator. If The Numerator And Denominator Are Both Increased By 1, The Fraction Becomes three/

Let the numerator and denominator of the fraction be 'n' and 'd' respectively.

D = 2n - 1

(n + 1)/(d + 1) = three/5

5n + 5 = 3d + three

5n + 5 = three(2n - 1) + 3 => n = 5

d = 2n - 1 => d = nine

Hence the fraction is : five/nine.

Q43. The Cost Of 2 Chairs And 3 Tables Is Rs.13

2C + 3T = 1300 --- (1)

3C + 3T = 1200 --- (2)

Subtracting second from 1st, we get

-C + T = one hundred => T - C = one hundred.

Q44. A Property Decreases In Value Every Year At The Rate Of 6 1/four% Of Its Value At The Beginning Of The Year Its Value At The End Of three Years Was Rs.2109

6 1/four% = 1/sixteen

x *15/16 * 15/sixteen * 15/16 = 21093

x = 25600.24.

Q45. The Ratio Of Two Numbers Is 2:3 And The Sum Of Their Cubes Is 94

2x.....3x

8x cube + 27x dice = 945

35x cube = 945

x cube = 27 => x = three.

Q46. The Average Of 11 Numbers Is 10.

1 to 11 = 11 * 10.Nine = 119.Nine

1 to six = 6 * 10.Five = sixty three

6 to eleven = 6 * eleven.4 = sixty eight.4

sixty three + 68.4 = 131.4 – 119.Nine = eleven.Five

6th range = 11.5.

Q47. A Is Thrice As Efficient As B And Is, Therefore, Able To Finish A Piece Of Work 10 Days Earlier Than B. In How Many Days A And B Will Finish It Together?

WC = three:1

WT = 1:3

x ............3x

1/x – 1/3x = 1/10

x = 20/three

three/20 + 1/20 = 1/5 => 5 days.

Q48. A Can Do A Piece Of Work In 30 Days. He Works At It For 5 Days And Then B Finishes It In 20 Days. In What Time Can A And B Together It?

5/30 + 20/x = 1

x = 24

1/30 + 1/24 = 3/40

forty/three = 13 1/3 days.

Q49. A, B And C Are Entered Into A Partnership. A Invested Rs.6500 For 6 Months, B Invested Rs.8400 For five Months And C Invested For Rs.10000 For three Months. A Is A Working Partner And Gets 5% Of The Total Pr

65 * 6 : eighty four * 5 : a hundred * 3

26:28:20

C share = 74000 * ninety five/one hundred = 7030 * 20/seventy four => 1900.

Q50. Two Pipes A And B Can Fill A Tank In four And 5 Hours Respectively. If They Are Turned Up Alternately For One Hour Each, The Time Taken To Fill The Tank Is?

1/4 + 1/five = nine/20

 20/9 = 2 2/nine

 nine/20 * 2 = 9/10 ---- four hours

 WR = 1 - 9/10 = 1/10

 1 h ---- 1/4

 ? ----- 1/10

 2/five * 60 = 24 = 4 hrs 24 min.