SOLUTION: John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time?

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Question 7354: John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time?
Answer by AnlytcPhil(1116) About Me  (Show Source):
You can put this solution on YOUR website!
John is traveling to a meeting that is 28 miles away. He needs to be there in
30 minutes. How fast does he need to go to make it to the meeting on time?
`
Learn these three equivalent equations:
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DISTANCE = RATE × TIME
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RATE = DISTANCE/TIME
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TIME = DISTANCE/RATE
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You are asked "how fast". That's asking for a RATE, so use the
middle one above.
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RATE = DISTANCE/TIME
`
The distance = 28 miles and the time = 30 minutes or .5 hour.
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RATE = 28 miles/(.5 hour) = 28/(.5) miles/hour = 56 miles/hour.
`
Edwin