P is 60% more efficient than Q. P can complete a work in 26 days. If P and Q work together, how many days will it take to complete the same work?
Choose the correct choice from the following.
A) 12  B) 14  C) 16  D) 18  E) 20
The work done by P in 1 day = 1/26   Let work done by Q in 1 day = q   q × (160/100) = 1/26   q = 100/(26×160) = 10/(26×16)   The work done by P and Q in 1 day = 1/26 + 10/(26×16) = 26/(26×16)= 1/16   P and Q together can do the work in 16 days.   The answer is 16.
<result>C</result>
P is 60% more efficient than Q. P can complete a work in 26 days. If P and Q work together, how many days will it take to complete the same work?