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# Time and Work | RRB NTPC | 25-04-2020

Question 1

A, B and C can do a certain piece of work in 4 days. A alone can do it in 12 days, B alone can do it in 10 days. In how many days C alone can complete the work?

Question 2

10 men can complete a piece of work in 7 days working 9 hours per day. How many men can complete the same work in 14 days working 5 hours per day?

Question 3

A pipe A can fill the tank in 10 hours another pipe B can empty the same tank in 15 hours. If both the pipes are opened together, then in how many hours tank will be completely filled?

Question 4

A can complete a piece of work in 20 days. B and C can complete it in $${150\ \over 11}$$ days. A and C can complete it in 12 days. In how many days B alone can complete the work?

Question 5

A can do  of the work in 8 days. B can do  of the work in 9 days and C can do 20% of the work in 3 days. In how many A, B and C together can complete the work?

Question 6

15 persons can do a work in 8 days. How many persons were required to complete one – third of the work in half the days?

Question 7

A, B and C alone can complete a piece of work in 12, 15 and 18 days respectively. If all of them started the work together, then in how many days total work will be completed?

Question 8

Ratio of efficiencies of A, B and C is 4 : 5 : 6. If the B can complete the work in 18 days, then in how many days, A and C together can complete the work?

Question 9

1 man, 1 woman and 1 boy can finish the job in 30, 40 and 50 days respectively. How many men were required with 10 boys and 8 women to complete the work in 2 days?

Question 10

15 men and 18 women can complete the work in 5 days. 2 men can complete the same work in 60 days. In how many days 5 women can complete the work?