Question

A and B together can do a pice of work in 10 days A alone can do the same.work in 30day in how many days will B alone finish the work​

Answer 1

Step-by-step explanation:

1/A+B=1/A+1/B

1/A+B-1/A=1/B

1/10-1/30=1/B

1/B=3-1/30

1/B=2/30

1/B=1/15

B=15 days