A is twice as good a workman as B and together they finish a piece of work in 18 days. In how many days will A alone finish the work? Choices.
A) 11 days	B) 22 days	C) 27 days	D) 12 days	E) 99 days
If A takes x days to do a work then B takes 2x days to do the same work.   --&gt; 1/x+1/2x = 1/18   --&gt; 3/2x = 1/18   --&gt; x = 27 days.   Hence, A alone can finish the work in 27 days.   Answer : 27 days
<result>C</result>
A is twice as good a workman as B and together they finish a piece of work in 18 days. In how many days will A alone finish the work?