A and B can do a piece of work in 12 days and 16 days respectively. Both work for 3 days and then A goes away. Find how long will B take to complete the remaining work?
Select the correct option: A) 2 days B) 6 days C) 8 days D) 9 days E) 5 days
Explanation:   3/12 + (3 + x)/16 = 1   x = 9 days   Answer:9 days
<result>D</result>
A and B can do a piece of work in 12 days and 16 days respectively. Both work for 3 days and then A goes away. Find how long will B take to complete the remaining work?