To do a piece of work, B takes 3 times as long as A and C together and C takes as long as A and B together. If A, B and C together can complete the work in 10 days, how long would A take alone to complete it?

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. If both P and Q work together, working 8 hours a day, in how many days can they complete the work?

A can build a wall in the same time in which B and C together can do it. If A and B together do it in 25 days and C alone in 35 days, in what time could B alone do it?

16 men can finish a work in 24 days and 48 boys can finish the same work in 16 days. 12 men started the work and after 4 days 12 boys joined them. In how many days can they finish the remaining work?

Twenty-four men can complete a work in sixteen days. Thirty-two women can complete the same work in twenty-four days. Sixteen women started working and worked for twelve days. How many more men are to be added to complete the remaining work in 2 days?

5 men and 2 boys working together can do four times as much work as a man and a boy. Working capacities of a man and a boy are in the ratio of:

if 12 men and 16 boys can do a piece of work in 5 days; 13 men and 24 boys can do it in 4 days, then the ratio of the daily work done by a man to that of a boy is:

4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?

25 men with 10 boys can do in 6 days as much work as 21 men with 30 boys can do in 5 days. How many boys must help 40 men to do the same work in 4 days?

. x can do 1/4 of a work in 10 days, y can do 40% of the work in 40 days and z can do 1/3 of the work in 13 days. Who will complete the work first?