Question

A can do a piece of work in 20 days and B can do it in 30 days. Find in how many days they together
complete the work?​

Answer 1

Answer:

6/5 days

Explanation:

As A can do work in 20 days,

then the work done by A in one day = 1/20

Similarly,

As B can do work in 30 days,

then the work done by B in one day = 1/30

The work done by A and B together in one day = 1/20 + 1/30 = 50/60

Therefore,

They can complete the work together in 6/5 days.

Answer 2

If A can do it work in 20 days

same as,

B can do it work in 30 days

then, 1/20+1/30=1/50 Or 1/60.

then we get -5 Or 6 days