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24 votes
24 votes
Fred is training for a cross-country race. At practice last week, he ran 6.25 miles in 1 1 4 hours. At that speed, how long would it take Fred to run 8.5 miles?

User Rajeev Sampath
by
3.2k points

2 Answers

7 votes
7 votes

Final answer:

Fred ran at a speed of 5 miles per hour. At this speed, it would take him 1.7 hours to run 8.5 miles.

Step-by-step explanation:

Fred is training for a cross-country race and ran 6.25 miles in 1 1/4 hours. To find out how long it would take Fred to run 8.5 miles at the same speed, we first calculate his speed during practice. Fred's speed is 6.25 miles / 1.25 hours = 5 miles per hour. Next, we can calculate the time it would take to run 8.5 miles at this speed by dividing the distance by the speed: 8.5 miles / 5 miles per hour = 1.7 hours.

Therefore, at the speed of 5 miles per hour, it would take Fred 1.7 hours to run 8.5 miles.

User Rostislav Matl
by
2.8k points
21 votes
21 votes

Answer: 155.04

Step-by-step explanation:

1) Find the amount of hours Fred runs 1 mile

- divide 6.25 by 6.25 and 114 by 6.25 (18.24)

2) Multiple back up to 8.5

- 1 by 8.5 (miles) and 18.24 by 8.5 (time)

For 155.04 hours, Fred runs 8.5 miles.

Hope this helps:)
[7th Grader]

User Jamal Aziz
by
2.6k points
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