Rahul can do 12 of a piece of work in 6 days ,while Rohit can do 14 of the same work in 2 days . in how many days can both do it together?
Rahul can do 2/7 of a certain work in 6 days while Suresh can do 3/5 of the same work in 9 days. They started work together but after 7 days Tahul left the work. Find in how many days Suresh can complete the remaining work?
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