Question

A and B together can finish a piece of work in 12 days. If‘A’alone can finish the same work in 20days, in how many days B alone can finish it?​

Answer 1

Answer:

30 days

1/20+b=1/12

b=1/12-1/20

b=2/60

b=1/30

B does 1/30 part of the week