Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in …

45 men can complete a piece of work in 16 days. Four days they started working , 36 more men joined them. How many days …

A can do a piece of work in 4 hours, B and C together in 3 hours, and A and C together in 2 hours. How long will B alone…

A man and a boy received Rs. 800 as wages for 5 days for the work they did together. The man's efficiency in the work wa…

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, B and C can complete a work in 10, 12 and 15 days respectively. They started the work together. But A left the work 5…

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…

A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A f…