TIME & WORK AND PIPES & CISTERNS (QUANTITATIVE APTITUDE) EPFO UPSC

Total Questions: 35

31. A tank has two pipes. The first pipe can fill it in 4 hours and the second can empty it in 16 hours. If two pipes be opened together at a time, then the tank will be filled in

Correct Answer: (d) 5⅓ hours
Solution:

32. B and C together can complete a work in 8 days, A and B together can complete the same work in 12 days and A and C together can complete the same work in 16 days. In how many days can A, B and C together complete the same work?

Correct Answer: (b)
Solution:

33. 6 women and 6 men together can complete a piece of work in 6 days. In how many days can 15 men alone complete the piece of work if 9 women alone can complete the work in 10 days?

Correct Answer: (d) None of these
Solution:

34. Three men, four women and six children can complete a work in 7 days. A women does double the work a man does and a child does half the work a men does. How many women alone can complete this work in 7 days?

Correct Answer: (b) 7
Solution:

35. 12 men take 36 days to do a work while 12 women complete 3/4 th of the same work in 36 days. In how many days 10 men and 8 women together will complete the same work?

Correct Answer: (b) 27 days
Solution: