Two pipes, P and Q can fill a cistern in 12 and 15 minutes respectively. Both are opened together, but at the end of 3 m…

A is twice as good a workman as B. If they work together, they can complete a job in 18 days. If A alone does the job, i…

X alone can complete a piece of work in 40 days. He worked for 8 days and left. Y alone completed the remaining work in …

16 women take 12 days to complete a work which can be completed by 12 men in 8 days. 16 men started working and after 3 …

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 cistern can be filled by two pipes in 20 and 30 minutes respectively. Both pipes being opened, when the first pipe mus…

Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened…

If p men working p hours per day for p days produce p units of work, then the units of work produced by n men working n …