Question

A mouse is crawling along a ledge. It takes the mouse 1 minute to crawl 90 feet. Which statement about the mouse is true?

A.
The average speed the mouse crawls is
0.
¯¯¯¯
66
feet in 1 minute.

B.
The average speed the mouse crawls is
0.0
¯¯¯¯
11
feet every second.

C.
The average speed the mouse crawls is
0.
¯¯¯¯
66
feet every second.

D.
The average speed the mouse crawls is 1.5 feet every second.

Answer 1

To find the average speed of the mouse, we first need to calculate how many feet the mouse crawls per second.

1. **Calculate the average speed in feet per minute:**
- The mouse crawls 90 feet in 1 minute.

2. **Convert minutes to seconds:**
- 1 minute = 60 seconds.

3. **Calculate the average speed in feet per second:**
\[
\text{Average speed} = \frac{90 \text{ feet}}{60 \text{ seconds}} = 1.5 \text{ feet per second}.
\]

Now let's evaluate each option:

- **A.** The average speed the mouse crawls is \( \frac{0}{66} \) feet in 1 minute. (False)
- **B.** The average speed the mouse crawls is \( 0.0 \frac{11}{\text{ seconds}} \) feet every second. (False)
- **C.** The average speed the mouse crawls is \( \frac{0}{66} \) feet every second. (False)
- **D.** The average speed the mouse crawls is 1.5 feet every second. (True)

The correct answer is:

**D. The average speed the mouse crawls is 1.5 feet every second.**