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Alex17521 [72]
3 years ago
14

If the track makes 30 miles in 25 minutes, find the time it will need to cover 25 miles

Mathematics
1 answer:
dimulka [17.4K]3 years ago
8 0

Answer:

  • About 21 min

Explanation:

Distance and time are directly related, meaning that distance / time = constant.

In this case the constant is the rate or speed.

Thus you can write:

  • speed = distance / time

And, given that covering 30 miles requires 25 minutes, to calculate the time needed to cover 25 miles, you can set this proportion:

  • 30 miles / 25 min = 25 miles / t

To clear t you do cross multiplication:

  • t × 30 miles = 25 miles × 25 min

Divide both sides by 30 miles:

  • t = 25 miles × 25 min / 30 miles = 20.8 min ≈ 21 min ← answer

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