Question

A and B together can do a piece of work in 12 days, B and
C together in 15 days. If A is twice as good a workman as
C, then in how many days will B alone do it?
(a) 10 days
(b) 15 days
(c) 20 days
(d) 25 days​

Answer 1

Answer:

the answer of this question will be 15 days