Question

Ramesh can do a piece of work in 10 days and Aman can do it in 15 days. how long will they take if both work together 10 days and Aman can do it in 15 days. how long will they take if both work together?

Answer 1

One day work of Ramesh =1/10
One day work of Aman =1/15
One day work of both=1/10+1/15=1/6
Both can do the work in 6 days