SOLUTION: A tire for a car is 28 inches in diameter. If the car is traveling at a speed of 20 mi/hr, find the number of revolutions the tire makes per minute. (Round your answer to the neare

Question 897087: A tire for a car is 28 inches in diameter. If the car is traveling at a speed of 20 mi/hr, find the number of revolutions the tire makes per minute. (Round your answer to the nearest hundredth.)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The circumference is:

in
One circumference is traced out in one revolution
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In words:
( revolutions / minute ) x ( inches / revolution ) = inches / minute
( revolutions / minute ) = ( inches / minute ) / ( inches / revolution )
( revolutions / minute ) = ( inches / minute ) / 87.948
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( inches / minute ) = ( inches / feet ) x ( feet / mile ) x ( miles / hour ) x ( hours / minute )
( inches / minute ) =
( inches / minute ) =
------------------------------
( revolutions / minute ) =

The tire makes 240.14 RPM
Hope I got it

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