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

A group of workers was put on a job. From second day onwards, one worker was withdrawn each day. The job was finished wh…

If 28 men complete $$\frac{7}{8}$$ of a piece of work in a week, then the number of men, who must be engaged to get the…

A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours.…

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 …

A and B together can do a piece of work in 30 days, B and C together can do it in 20 days, A starts the work and works o…

If 2 men or 6 women or 4 boys can finish a work in 99 days, how many days will one man, one woman and one boy together t…

Ayesha can complete a piece of work in 16 days. Amita can complete the same piece of work in 8 days. If both of them wor…