A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?

If 72 men can build a wall of 280 m length in 21 days, how many men could take 18 days to build a similar type of wall o…

If 12 carpenters working 6 hours a day can make 460 chairs in 240 days, then number of chairs made by 18 carpenters in 3…

A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same…

40 men can complete a piece of work in 18 days. Eight days after they started working together, 10 more men joined them.…

The labourers A, B, C were given a contract of Rs. 750 for doing a certain piece of work. All the three together can fin…

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 and B can do a piece of work in 12 days, B and C in 8 days and C and A in 6 days. How long would B take to do the same…