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

Question

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.