Question

A and B together can do a piece of work in 15 days A alone can do it in 20 days. In how many days B alone can do it? *​

Answer 1

Answer:

35

Step-by-step explanation:

=20+15

=35

answer is 35

Answer 2

Answer:

60 days

Step-by-step explanation:

1/A +1/B = 1/15

1/20 + 1/B = 1/15

1/B =1/60

B=60