A can build up a wall in 8 days while B can break it in 3 days. A has worked for 4 days and then B joined to work with A…

If m men can do a work in r days, then the number of days taken by (m + n) men to do it is :

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 together complete a piece of work in T days. If A alone completes the work in T + 3 days and B alone completes t…

A tank has a leak which would empty the completely filled tank in 10 hours. If the tank is full of water and a tap is op…

If 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days, then 10 women c…

3 men and 7 women can do a job in 5 days, while 4 men and 6 women can do it in 4 days. The number of days required for a…

A can do a piece of work in 20 days and B in 15 days. With help of C, they finish the work in 5 days. In how many days C…