7 hr

7.5 hr

8 hr

8.5 hr

**Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If…****5 men and 2 boys working together can do four times as much work as a man and a boy. Working capacity…****A can do a piece of work in 15 days and B alone can do it in 10 days. B works at it for 5 days and then…****A piece of work can be done by 6 men and 5 women in 6 days or 3 men and 4 women in 10 days. It can be…****A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. B alone…****10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days…****A does half as much work as B in three-fourth of the time. If together they take 18 days to complete…****A completes 80% of a work in 20 days. Then B also joins and A and B together finish the remaining work…****A can do a certain job in 25 days which B alone can do in 20 days. A started the work and was joined…****A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what…****Worker A takes 8 hours to do a job. Worker B takes 10 hours to do a job. How long should it take both…****A can finish a work in 18 days and B can do same work in half the time taken by A. then working together,…****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.…****To complete a work A and B takes 8 days, B and C takes 12 days, A,B and C takes 6 days. How much time…****A tyre has two punctures. The first puncture alone would have made the tyre flat in 9 minutes and the…****A is twice as good as workman as B and together they finish a piece of work in 18 days. In how many…****A can do a piece of work in 4 hours . A and C together can do it in just 2 hours, while B and C together…****4 men and 6 women finish a job in 8 days, while 3 men and 7 women finish it in 10 days. In how many…****A and B can together complete a piece of work in 4 days. If A alone can complete the same work in 12…****A can do a job in 16 days, B can do same job in 12 days. With the help of C they did the job in 4 days.…****Mr. Rocky is on tour and he has Rs 360 for his expenses. If he exceeds his tour by 4 days he must…**