SOLUTION: How do I set up the following problem? If it takes me 2 hours to drive an unknown distance at 45 miles/hr. how long will it take me to drive the same unknown distance at 30 miles/

Question 433665: How do I set up the following problem? If it takes me 2 hours to drive an unknown distance at 45 miles/hr. how long will it take me to drive the same unknown distance at 30 miles/hr.?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How do I set up the following problem?
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If it takes me 2 hours to drive an unknown distance at 45 miles/hr.,
how long will it take me to drive the same unknown distance at 30 miles/hr.?
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The "unknown" distance is (time)(rate) = 2*45 = 90 miles
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If the rate is 30 mph, the time is:
time = distance/rate = 90/30 = 3 hrs.
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cheers,
Stan H.
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