A job can be done by 3 skilled workmen in 20 days or by 5 boys in 30 days. How many days will they take if they work tog…

A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help o…

Two typist of varying skills can do a job in 6 minutes if they work together. If the first typist typed alone for 4 minu…

A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?

X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 da…

A and B undertake a piece of work for Rs. 250. A alone can do that work in 5 days and B alone can do that work in 15 day…

A and B can do a piece of work in 72 days, B and C can do it in 120 days and A and C can do it in 90 days. In how many d…

A can do a piece of work in 90 days, B in 40 days and C in 12 days. They work for a day each in turn i.e., first day A d…