[" 18.A can do a piece of work in "2" points "],[15" days and "B" alone can do it in "],[10" days."B" works it for "5" days "],[" and then leaves.A alone can "],[" finish the remaining work in "]

A can do a piece of work in 15 days and B alone can do it in 10 days. B works at it for 5 days and then leaves. In how many days, A alone can finish the remaining work?

A and B together can do a piece of work in 5 days and A alone can do it in 30 days. B alone can do the work in how many days?

A can finish a piece of work in 15 days and B can do it in 10 days. They worked together for 2 days and then B goes away. In how many days will A finish the remaining work ?

A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

A can do a piece of work in 20 days and B can do the same piece of work in 30 days. They start working together and work for 5 days and then both leave he work. C alone finishes the remaining work in 14 days. In how many days will C alone finish the whole work?

P can do a piece of work in 20 days and Q can do the same piece of work in 60 days. They start working together and work for 5 days and then both leave the work. R alone finishes the remaining work in 10 days. In how many days will R alone finish the whole work?