A can do a piece of work in 28 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 from the following options.
A) 5days  B) 6days  C) 7.5days  D) 14days  E) 9days
Explanation:   B's 5 days work =   1/10∗5=1/2   Remaining work =1−1/2=1/2   A can finish work =28∗1/2=14days   Option 14days
<result>D</result>
A can do a piece of work in 28 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