Answer
e.g.: $\frac{10 \text{ books}}{2\text{ people}}=5\frac{\text{books}}{\text{people}}$.
The unit of measurement is books per people.
Work Step by Step
As it is a fraction of the two function, the units of measurement will be the fraction of the two measurements of the separate functions:
e.g.: $\frac{10 \text{ books}}{2\text{ people}}=5\frac{\text{books}}{\text{people}}$.
The unit of measurement is books per people.
