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? Pick one:	A) 6 days	B) 9 days	C) 18 days	D) 24 days	E) 4 days
Explanation:   3/12 + (3 + x)/16 = 1   x = 9 days   Answer 9 days
<result>B</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?