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
A) 6 days B) 8 days C) 5 days D) 9 days E) 4 days
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?