Question

If A can do a 1/4 of a work in 10 days and B
can do 1/3 of that work in 20 days. Then
both A and B together can complete the
work in
days​

Answer 1

Answer:

A can do 1/4 of work in 10 days B can do 1/3 of the work in 20 days. How many days can both A and B together do the work?

A does 1/40th of the work in a day. B does 1/60th of the work in a day.

A and B together do (1/40)+(1/60) = (60+40)/(40*60) = 100/2400 or 1/24th part of the work in a day. So A and B working together will do the same work in 24 days.