P is 20% more efficient than Q. P can complete a work in 22 days. If P and Q work together, how many days will it take to complete the same work?  Choose the correct answer:
A) 8  B) 11  C) 12  D) 15  E) 16
The work done by P in 1 day = 1/22   Let work done by Q in 1 day = q   q × (120/100) = 1/22   q = 100/(22×120) = 10/(22×12)   The work done by P and Q in 1 day = 1/22 + 10/(22×12) = 22/(22×12)= 1/12   P and Q together can do the work in 12 days.   The answer is 12.
<result>C</result>
P is 20% more efficient than Q. P can complete a work in 22 days. If P and Q work together, how many days will it take to complete the same work?