In a certain gear, a bicycle tire with a diameter of 27 inches makes 3 complete revolution of the pedal.If a cyclist is pedaling at a rate of 100 revolutions per minute, find the speed of the bicycle in miles per hour?

Answer 1

Assuming you meant

a bicycle tire makes 3 complete revolutions for each revolution of the pedal

then we have (in inches/minute)

100 * 3 * 27π

Now just convert that to miles/hour.

Answer 2

20