Albert walks 4/5

Question

of a mile in 5/12

of an hour. Which expression can be used to calculate his unit rate in miles per hour?

Answer 1

To find Albert's unit rate in miles per hour, you can set up the expression as follows:

1. Determine the distance he walked: 4/5 of a mile.
2. Determine the time taken: 5/12 of an hour.

The unit rate in miles per hour can be calculated using the formula:

\[ \text{Unit Rate} = \frac{\text{Distance}}{\text{Time}} = \frac{\frac{4}{5} \text{ miles}}{\frac{5}{12} \text{ hours}} \]

To simplify this expression, you multiply by the reciprocal of the time:

\[ \text{Unit Rate} = \frac{4}{5} \times \frac{12}{5} \]

So the expression you can use to calculate his unit rate in miles per hour is:

\[ \frac{4}{5} \times \frac{12}{5} \]