A is twice as fast as B. If B alone can do a piece of work in 24 days, in what time can A and B together complete the work?	Choose the correct answer
A) 10	B) 12	C) 6	D) 2	E) 8
A can do the work in 24/2 i.e., 12 days.   A and B's one day's work = 1/12+ 1/24 = (2 + 1)/24 = 1/8   So A and B together can do the work in 8 days.   Answer: 8
<result>E</result>
A is twice as fast as B. If B alone can do a piece of work in 24 days, in what time can A and B together complete the work?