Question

1.A can do a piece of work in 20 days. B in 15 days, A and C in
12 days. In how many days can A finish the work if he is
assisted by B on one day and C on the next, alternately?
A) 6 days B) 7 days C) 8 days D) 10 days​

Answer 1

Answer:

here

Explanation:

A)6 days A and B can finish the work.