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EXAM Math Questions and Answer Page 8613

(#M40020647) EXAM QUESTION time and work Keep an EYE

There are 12 pipes attached to a tank. Some of them are fill pipes and some are drain pipes. Each of the fill pipes can fill the tank in 12 hours, while each of the drain pipes will take 24 hours to drain a full tank completely. If all the pipes are kept open when the tank was empty, it takes 2 hours for the tank to overflow. How many of these pipes are drain pipes?

A.

6

B.

11

C.

4

D.

7

Asked In exam MAN (12 years ago)

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(#M40020646) EXAM QUESTION time and work Keep an EYE

A work is done by three person A,B and C. A alone takes 10 hours to complete a single product but B and C working together takes 4 hours, for the completion of the same product. If all of them worked together and completed 14 products, then how many hours have they worked?

A.

20 hrs

B.

28 hrs

C.

40 hrs

D.

54 hrs

Asked In exam MAN (12 years ago)

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(#M40020645) EXAM QUESTION time and work Keep an EYE

Water flows into a reservoir which is 200 m long and 150 m wide, through a pipe of cross-section (0.3m X 0.2m) at 20kmph. In what time will the water level be 8?

A.

100 hrs

B.

150 hrs

C.

175 hrs

D.

200 hrs

Asked In exam MAN (12 years ago)

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(#M40020643) EXAM QUESTION time and work Keep an EYE

A and B together can complete a piece of work in 35 days while A alone can complete the same work in 60 days. B alone will be able to complete the same working in:

A.

74 Days

B.

80 Days

C.

84 Days

D.

90 Days

Asked In exam MAN (12 years ago)

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(#M40020642) EXAM QUESTION time and work Keep an EYE

Mr. Ram is on tour and he has Rs 360 for his expenses. If he exceeds his tour by 4 days he must cut down daily expenses by Rs 3. The number of days of Mr. Ram's tour programme is

A.

28 Days

B.

24 Days

C.

22 Days

D.

20 Days

Asked In exam MAN (12 years ago)

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(#M40020641) EXAM QUESTION time and work Keep an EYE

Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened simultaneously, then the cistern will be filled in

A.

7.5 hr

B.

8 hr

C.

8.5 hr

D.

10 hr

Asked In exam MAN (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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(#M40020627) EXAM QUESTION time,speed Keep an EYE

A, B and C start simultaneously from X to Y. A reaches Y, turns back and meet B at a distance of 11 km from Y. B reached Y, turns back and meet C at a distance of 9 km from Y. If the ratio of the speeds of A and C is 3:2, what is the distance between X and Y?

A.

99 m

B.

100 m

C.

120 m

D.

142 m

Asked In exam MAN (12 years ago)

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(#M40020626) EXAM QUESTION time,speed Keep an EYE

From a point P, on the surface of radius 3cm, two cockroaches A and B started moving along two different circular paths, each having the maximum possible radius, on the surface of the sphere, that lie in the two different planes which are inclined at an angle of 45 degree to each other. If A and B takes 18 sec and 6 sec respectively, to complete one revolution along their respective circular paths, then after how much time will they meet again, after they start from P?

A.

27 sec

B.

24 sec

C.

18 sec

D.

9 sec

Asked In exam MAN (12 years ago)

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