Amulya does a pieces of work in 2 days and Bindu does it in 6 days. In how many days will the two do it together?
A man can do a piece of work in 5 days. He and his son working together can finish it in 3 days. In how many days can the son do it alone? 1
(a) 612 days
(b) 7 days
(c) 712 days
(d) 8 days
A can do a piece of a work in 7 days, A and B can do the work together in 6 days. If B alone does the work how many days does he require?