A can do a piece of work in 14 days while B can do it in

Home » Aptitude » Time and Work » Question

A can do a piece of work in 14 days while B can do it in 21 days. In how many days, working together they will complete the whole work?

One day's work of A and B = 1/14 + 1/21 = 5/42
∴ Required number of days = 42/5 = 8.4 days