Question

Melissa walked at a rate of 88 feet per minute. What was her approximate speed to the nearest tenth of a mile per hour?
0.1 miles per hour
1.0 miles per hour
2.8 miles per hour
8.8 miles per hour

Answer 1

To convert Melissa's walking speed from feet per minute to miles per hour, we can follow these steps:

1. **Convert feet per minute to miles per minute**:
- There are 5280 feet in a mile.
\[
\text{Miles per minute} = \frac{88 \text{ feet}}{5280 \text{ feet/mile}} = \frac{88}{5280} \approx 0.01667 \text{ miles per minute}
\]

2. **Convert miles per minute to miles per hour**:
- Since there are 60 minutes in an hour, we multiply by 60.
\[
\text{Miles per hour} = 0.01667 \text{ miles/minute} \times 60 \text{ minutes/hour} \approx 1.0002 \text{ miles/hour}
\]

3. **Rounding to the nearest tenth of a mile per hour**:
- Approximately, this is 1.0 miles per hour.

Thus, Melissa's approximate speed is **1.0 miles per hour**.