X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they tog…

A and B can do a job in 7 days. A is $${\text{1}}\frac{3}{4}$$ times as efficient as B. The same job can be done by A a…

Working efficiencies of P and Q for completing a piece of working are in the ratio 3 : 4. The number of days to be taken…

X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joi…

A started a ,work and left after working for 2 days. Then B was called and he finished the work in 9 days. had A left th…

A can do as much work as B and C together can do. A and B can together do a piece of work in 9 hours 36 minutes and C ca…

25 men with 10 boys can do in 6 days as much work as 21 men with 30 boys can do in days. How many boys must help 40 men …

A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They al…