Question

1. rebecca ran 21 miles in 5 hours. if she ran at a constant speed, how many miles did she run in 2 hours? a. 8.4 miles b. 42 miles c. 4.2 miles d. 1.2 miles

Explanation:

Step1: Calculate constant speed

$\text{Speed} = \frac{\text{Total Distance}}{\text{Total Time}} = \frac{21}{5} = 4.2$ miles/hour

Step2: Find distance in 2 hours

$\text{Distance} = \text{Speed} \times \text{Time} = 4.2 \times 2 = 8.4$ miles

Answer:

A. 8.4 miles