If Arif can do a piece of work in 10 days and Rakib can complete the same work in 6 days, in how many days will both of them together can complete it?

Question: If Arif can do a piece of work in 10 days and Rakib can complete the same work in 6 days, in how many days will both of them together can complete it?Solution:Arif's 1 day's work = 1/10Rakib's 1 day's work = 1/6(Arif + Rakib)'s 1 day's work = (1/6 + 1/10) = 8/30 = 4/15 Both together can complete the work in 15/4 day's.