A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in ?	Pick one
A) 3 days	B) 5 days	C) 6 days	D) 7 days	E) 11 days
B's 9 day's work = 9 x (1/12) = 3/4   Remaining work = (1 - 3/4) = 1/4   1/4 work is done by A in = 20 x (1/4) = 5 days.   answer : 5 days
<result>B</result>
A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in ?