Question

Mr. Walker, a runner, asked students to find the unit rate of the winner of the first Boston Marathon in 1897. John J. McDermott ran the marathon in 175 minutes. The length of the course was only 24.5 miles instead of 26 miles as it is today. What was the unit rate?

Answer 1

Answer: 8.4 miles per hour

Explanation:

Since, total distance = 24.5 miles,

Time taken =
`175 \text{ minutes} = (175)/(60) \text{ hours} =(35)/(12) \text{ hours}`

Thus,

`\text{ The unit rate} = \frac{\text{ Total distance}}{\text{ Time taken}}`

`=(24.5)/(35/12)`

`=(294)/(35)`

`=8.4\text{ miles per hour}`