Question

A alone can work in 20 days and b alone can do in 5 days .Starting with a they work on alternate days. The total work will be completed in how many days?

Answer 1

Answer:

8 days

Step-by-step explanation:

work done in two days = (1/20)+(1/5)=(1/4)

one day's work = (1/4 ) ÷ 2 days = 1/8 days

therefore total number of days is 8