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 166413: 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 gonzo(654) About Me  (Show Source):
You can put this solution on YOUR website!
rate times time = distance.
rate = R
time = T
distance = D
-----
R*T = D
T = 30 minutes = 1/w hour
D = 28 miles
R*(1/2) = 28
R = 2*28
R = 56
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he will have to travel at 56 miles per hour.