Question

anuj and bhanu can together finish a work in 30 days,they work together for 20days and then bhanu left, anuj finished the remaining work in 20 days. in how many days anuj alone finish all the work.

Answer 1

Anuj and Bhanu can do the work in 30 days
In 20 days they would finish (1/30)*20=20/30=2/3 work
Work left =1-2/3=1/3
Anuj finished 1/3 work in 20 days.
He will finish the whole work in 1*20/(1/3)=60 days
Anuj alone finish work in 60days.