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. A alone can finish the remaining work in Choose the correct choice
A) 5 days B) 6 days C) 7.5 days D) 8.5 days E) None of these
Explanation:   B's 5 days work =   110   ∗   5=12Remaining work =1−12=12A can finish work =15   ∗   12=7.5days   Answer: 7.5 days
<result>C</result>
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. A alone can finish the remaining work in