A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it _____ ? February 2, 2024 – by admin 0A. 60 daysB. 20 daysC. 50 daysD. 70 days(A+B)’S 1 day’s work = [1/15−1/20]=1/60A alone can finish it in 60 days
