Question 13
Several people were surveyed for their preference for 4 drinks A, B, C and D. All the people surveyed are represented in the graph below. If the fraction of people who preferred A to those who preferred D is $\frac{m}{n}$, what is $m+n$?
Editorial clarification: take m and n to be positive integers with m/n in lowest terms. The original statement omits this condition. The vertical axis shows the number of people.

**Input:** Enter the integer only, without units.
Editorial clarification: take m and n to be positive integers with m/n in lowest terms. The original statement omits this condition. The vertical axis shows the number of people.

**Input:** Enter the integer only, without units.