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EXAM Math Questions and Answer Page 8611

(#M40020681) EXAM QUESTION time and work Keep an EYE

Pankaj can produce one unit in 15 days, while Bharti can do the same in 12 days. After producing one unit, working together, they received Rs. 90, which they distributed amongst themselves in proportional to their efficiency. If they work for 20 days, and sell the produce, then Bharti should receive

A.

Rs. 120

B.

Rs. 140

C.

Rs. 150

D.

Rs. 160

Asked In exam MAN (12 years ago)

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(#M40020680) EXAM QUESTION time and work Keep an EYE

Suppose q is the number of workers employed by Simplex Ltd. for one of its projects. The average cost of production c is given by c=
q2
3
+
5q
2
−150+
75
q
. In the interest of the company, it should employ __________ workers.

A.

5

B.

4

C.

7

D.

10

Asked In exam MAN (12 years ago)

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(#M40020679) EXAM QUESTION time and work Keep an EYE

Two taps can fill a tank in 12 min and 18 min respectively. Both the taps are kept open for 2 min and then the tap that fills the tank in 12 min is turned off. In how many more minutes will the tank be filled?

A.

9

B.

12

C.

13

D.

10

Asked In exam MAN (12 years ago)

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(#M40020677) EXAM QUESTION time and work Keep an EYE

Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and the work gets completed. How much more efficient is Ram than Ravi?

A.

50%

B.

200%

C.

125%

D.

100%

Asked In exam MAN (12 years ago)

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(#M40020676) EXAM QUESTION time and work Keep an EYE

Ram, who is half as efficient as Krish, will take 24 days to complete a work if he worked alone. If Ram and Krish worked together, how many days will they take to complete the work?

A.

16

B.

12

C.

8

D.

18

Asked In exam MAN (12 years ago)

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(#M40020674) EXAM QUESTION time and work Keep an EYE

Pavan builds an overhead tank in his house, which has three taps attached to it. While the first tap can fill the tank in 12 hours, the second one takes one and a half times more than the first one to fill it completely. A third tap is attached to the tank which empties it in 36 hours. Now one day, in order to fill the tank, Pavan opens the first tap and after two hours opens the second tap as well. However, at the end of the sixth hour, he realizes that the third tap has been kept open right from the beginning and promptly closes it. What will be the total time required to fill the tank?

A.

8 hours 48 minutes

B.

9 hours 12 minutes

C.

9 hours 36 minutes

D.

8 hours 30 minutes

Asked In exam MAN (12 years ago)

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(#M40020672) EXAM QUESTION time and work Keep an EYE

Pipe A can fill a tank in 'a' hours. On account of a leak at the bottom of the tank it takes thrice as long to fill the tank. How long will the leak at the bottom of the tank take to empty a full tank, when pipe A is kept closed?

A.

3
2
a hours

B.

2
3
a hours

C.

4
3
a hours

D.

3
4
a hours

Asked In exam MAN (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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(#M40020668) EXAM QUESTION time and work Keep an EYE

Due to hole at the bottom of the tank, a tap takes 2 more minutes to completely fill the tank. Due to leakage of water through this hole, a bucket filled completely with water gets emptied in 4 minutes. In how much time can the tap fill the tank, if there was no hole at the bottom at the tank?

A.

8 min

B.

2 min

C.

4 min

D.

6 min

Asked In exam MAN (12 years ago)

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(#M40020666) EXAM QUESTION time and work Keep an EYE

Aditya, Vedus and Yuvraj alone can do a job for 6 weeks, 9 weeks and 12 weeks respectively. They work together for 2 weeks. Then, Aditya leaves the job. Vedus leaves the job a week earlier to the completion of the work. The job would be completed in:

A.

4 weeks

B.

5 weeks

C.

7 weeks

D.

None of these

Asked In exam MAN (12 years ago)

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