The sprocket assembly on a bicycle consists of a chain and two sprockets on the rear wheel. If the sprocket on the pedal is 9 inches in the diameter , the sprocket on the rear wheel is 6 inches in diameter , and the rear wheel is 26 inches in diameter, how fast is the bicycle traveling mph when the cyclist is pedaling at the 1.2 rev per second.?

Question

I don't know what information to use.

Answer 1

1.2rev/s * 9/6 * 26πin/rev = 147in/s

now just convert that to mi/hr