A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes,…

A conveyor belt delivers baggage at the rate of 3 tons in 5 minutes and second conveyor belt delivers baggage at the rat…

Two worker A and B are engaged to do a piece of work. A working alone would take 8 hours more to complete the work that …

P can complete a work in 12 days working 8 hours a day. Q can complete the same work in 8 days working 10 hours a day. I…

A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A…

A and B can do a job together in 7 days. A is $$1\frac{3}{4}$$  times as efficient as B. The same job can be do…

A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A…

P can complete $$\frac{1}{4}$$ of a work in 10 days, Q can complete 40% of the same work in 145 days. R, complete $$\fr…