• Placement Questions

Frequently Asked Interview Questions and Answers

(#M40020675) SELF QUESTION Keep an EYE

Three professors Dr. Gupta, Dr. Sharma, Dr. Singh are evaluating answer script of a subject. Dr. Gupta is 40% more efficient than Dr. Sharma, who is 20% more efficient than Dr. Singh. Dr. Gupta takes 10 days less than Dr. Sharma to complete the evaluation work. Dr. Gupta starts the evaluation work and works for 10 days and then Dr. Sharma takes over. Dr. Sharma evaluates for next 15 days and then stops. In how many days, Dr. Singh can complete the remaining evaluation work?

vikash singh (12 years ago)

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(#M40020670) EXAM QUESTION time and work Keep an EYE

Jay and Anup can do a job, each working alone in 30 and 15 days respectively. Jay started the work and after a few days, Anup joined him. They completed the work in 18 days from the start. After how many days did Anup join A?

A.

6

B.

10

C.

12

D.

14

Asked In exam MAN (12 years ago)

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(#M40020664) EXAM QUESTION time and work Keep an EYE

A man can do a piece of work in 60 hours. If he takes his son with him and both work together then the work is finished in 40 hours. How many hours will the son take to do the same job, if he worked alone on the job?

A.

20

B.

60

C.

100

D.

120

Asked In exam MAN (12 years ago)

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(#M40020661) SELF QUESTION Keep an EYE

There are 12 pipes that are connected to a tank. Some of them are fill pipes and the others are drain pipes. Each of the fill pipes can fill the tank in 8 hours and each of the drain pipes can drain the tank completely in 6 hours. If all the fill pipes and drain pipes are kept open, an empty tank gets filled in 24 hours. How many of the 12 pipes are fill pipes?

vikash singh (12 years ago)

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(#M40020654) SELF QUESTION Keep an EYE

If A and B work together, they will complete a job in 7.5 days. However, if A works alone and completes half the job and then B takes over and completes the remaining half alone, they will be able to complete the job in 20 days. How long will B alone take to do the job if A is more efficient than B?

vikash singh (12 years ago)

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(#M40020653) SELF QUESTION Keep an EYE

Three pipes A,B and C are connected to a tank. These pipes can fill the tank separately in 5hr, 10 hr and 15hr respectively. When all the three pipes were opened simultaneously, it was observed that pipes A and B were supplying water at (
3
4
)th of their normal rates for the 1st hour after which they supplied water at normal rate. Pipe C supplied water at (
2
3
)rd of its normal rate for 1st 2 hour, after which it supplied at its normal rate. In how much time, tank would be filled?

vikash singh (12 years ago)

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(#M40020652) EXAM QUESTION time and work Keep an EYE

A pump can be used either to fill or to empty a tank. The capacity of the tank is 3600m3. The emptying capacity of the pump is 10m3/min higher than its filling capacity. What is the emptying capacity of the pump if the pump needs 12 more minutes to fill the tank than to empty it?

A.

10
m3
min

B.

60
m3
min

C.

45
m3
min

D.

90
m3
min

Asked In exam MAN (12 years ago)

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(#M40020649) SELF QUESTION Keep an EYE

What is the value of 1×1!+2×2!+3!×3!+............n×n!;
where n! means n factorial or n(n−1)(n−2)...1?

vikash singh (12 years ago)

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(#M40020639) EXAM QUESTION time and work Keep an EYE

To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take :

A.

7 Days

B.

7.5 Days

C.

8 Days

D.

8.5 Days

Asked In exam MAN (12 years ago)

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(#M40020638) EXAM QUESTION time and work Keep an EYE

A can do piece of work in 30 days while B alone can do it in 40 days. In how many days can A and B working together do it?

A.

16
1
7

B.

17
1
7

C.

18
1
7

D.

19
1
7

Asked In exam MAN (12 years ago)

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