Question

A and B can do piece of work in 30 days while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days then B and C leave. How many days more will A take to finish the work?
(a) 18 days
(b) 24 days
(c) 30 days
(d) 36 days
(e) 28 days

Answer 1

the answer is 18 days