IBPS RRB Work and Time Questions

The work done by a woman in 8 hours is equal to the work done by a man in 6 hours and by a boy in 12 hours. If working 6 hours per day 9 men can complete a work in 6 days then in how many days can 12 men, 12 women and 12 boys together finish the same work working 8 hours per day?

A can do a piece of work in 16 days, B in 10 days. A and B work at it together for 6 days and then C finish it in 3 days, in how many days could C have done it alone? 

If 30 men and 14 boys can reap a field in 21 days, in how many days will 20 men and 4 boys reap it, supposing that 3 men can do as much as 5 boys? 

38 men, working 6 hours a day can do a piece of work in 12 days. Find the number of days in which 57 men working 8 hrs. a day can do twice the work. Assume that 2 men of the first group do as much work in 1 hour as 3 men of the second group do in 3/2 hr. 

To complete a work, A and B take 30 days, B and C take 24 days, and C and A take 20 days. They all start together and work for 5 days after which B and C leave. How many days will A take to finish the remaining work? 

The wages of 10 men and 8 boys amount to Rs. 37. If 4 men together receive  Re 1 more than 6 boys, what are the wages of each man and boy respectively? 

A can do a job in 20 days, B in 30 days and C in 60 days. If A is helped by B and C every 3rd day. How long will it take for them to complete the job? 

Three factories are capable of manufacturing a particular part of the bike. Each of the two factories can produce 1,00,000 parts in 15 days. The third factory can produce them 30% faster. How many days (approx.) would it take to produce a million parts with all the three working simultaneously? 

To do a certain work B would take three times as long as A and C together and C twice as long as long as A and B together. The three men together complete the work in 10 days. How long would A,B and C take separately? 

Five men can do a piece of work in 2 hours, which 7 women could do in 3 hours, or 9 children in 4 hours. How long would 1 man, 1 woman and 1 child together take to do the work?