SOLUTION: Your bike has 26" tires (diameter). The ratio for turns is 3:1 ( the wheel turns 3 times when you pedal once). You can pedal 50 times per minute. How long will it take to ride a 10

Question 206885: Your bike has 26" tires (diameter). The ratio for turns is 3:1 ( the wheel turns 3 times when you pedal once). You can pedal 50 times per minute. How long will it take to ride a 10km race?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Your bike has 26" tires (diameter). The ratio for turns is 3:1 ( the wheel turns 3 times when you pedal once). You can pedal 50 times per minute. How long will it take to ride a 10km race?
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Circumference = 26pi inches
Pedalling 50 rpm turns the wheel at 150 rpm
150*26pi = 7800pi in/min
= 7800pi*2.54 cm/min
= 78pi*2.54 meters/min
= 1/(2.54*78pi) minutes/meter
10000 meters --> 10000/2.54*78pi minutes
= ~ 16.06 minutes

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