Question

a snail moves 5 feet in 2 minutes. what is its speed in centimeters per minute? use 1 foot ≈ 30\frac{1}{2} centimeters. a. 76\frac{1}{4} b. 152\frac{1}{2} c. 3\frac{1}{20} d. 2\frac{1}{2}

Explanation:

Step1: Convert feet to centimeters

First, find out how many centimeters are in 5 feet. Given that 1 foot ≈ \( 30\frac{1}{2} \) centimeters, which is \( \frac{61}{2} \) centimeters. So for 5 feet, we calculate \( 5\times\frac{61}{2}=\frac{305}{2} \) centimeters.

Step2: Calculate speed in cm per minute

The snail moves this distance in 2 minutes. To find the speed per minute, we divide the total centimeters by the total minutes. So speed \( = \frac{\frac{305}{2}}{2}=\frac{305}{4}=76\frac{1}{4} \) centimeters per minute.

Answer:

A. \( 76\frac{1}{4} \)