Question

a can do a peice of work in 15 days while b can do it in 10 days how long will they together to do it​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

6 days

Step-by-step explanation:

In 15 days A do a piece of work.

In 1 day A can piece of work=1/15

In 10 days B do the work.

In 1day B can do the work=1/10

If they will work A and B together

=1/15+1/10

=5/30

=6 days