A is twice as good a work man as B and together they finish the work in 14 days. In how many days A alone can finish the work?	Choose one
A) 21 days  B) 51 days  C) 35 days  D) 31 days  E) 24 days
21 days   21 days   WC = 2:1   2x + x = 1/14 =&gt; x = 1/42   2x = 1/21   21 days can do the work in 21 days.
<result>A</result>
A is twice as good a work man as B and together they finish the work in 14 days. In how many days A alone can finish the work?