Latest exam Aptitude Question SOLUTION: 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.

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Previous Question: 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 Next Question: 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

(#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 (10 years ago); Unsolved Read Solution (3); Is this Puzzle helpful? (20) (10) Submit Your Solution

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Previous Question: 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 Next Question: 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

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