A is twice as good as B. And together they finish a piece of work in 18days. In how many days will A alone finish the work Pick.
A) 25	B) 27	C) 15	D) 18	E) 21
(A's 1day work):(27's 1day work) = 2:1   A+27 1day work = 1/18   A's 1day work = (1/18)*(2/3) = 1/27   A alone can finish the work in 27 days   Answer is 27
<result>B</result>
A is twice as good as B. And together they finish a piece of work in 18days. In how many days will A alone finish the work