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40 votes
Kira ran 8 1/5 miles in 69 7/10 minutes. What is Kira’s average time per mile?

User LeoHorie
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1 Answer

22 votes
22 votes

Answer:

1 mile = 8.5 minutes

Explanation:

Determining the equation:

Kira ran 8 1/5 miles in 69 7/10 minutes.

⇒ Kira = 8 1/5 miles = 69 7/10 minutes

⇒ 41/5 miles = 697/10 minutes

Simplifying both sides:

⇒ 41/5 miles = 697/10 minutes

⇒ 41 miles = 697/2 minutes

Using cross multiplication:

⇒ 41 × 2 miles = 697 minutes

⇒ 82 miles = 697 minutes

Dividing 82 both sides:

⇒ 82 miles = 697 minutes

⇒ 82/82 miles = 697/82 minutes

1 mile = 8.5 minutes

User Cocoatype
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