Question

A can do a work in 80 days, B can do the work in 60
days. They work
in rotation beginning with A in their order of
appearance in the question. In how many days will
the work be completed?​

Answer 1

Step-by-step explanation:

Now A can do a price of work in 80 days. So let the total work =80units.

A→80 days=1 unit/day

So in 10 days, A has completed 10 units

∴ Remaining work=70 units

Now B finishes this in 42 days. So rate of work if

For good explanation please refer to the attached file