Question

On Anne's bicycle, the ratio of pedal turns to rear- wheel turns in second gear is 4 to 7. If her rear wheel turns 875 times per mile, how many times does she turn the pedal in one mile? HINT: Set up and solve as a proportion to find x.

Answer 1

4 / 7 = x / 875....4 pedal to 7 rear = x pedal to 875 rear
cross multiply
(7)(x) = (4)(875)
7x = 3500
x = 3500/7
x = 500 <== she turns the pedal 500 times in 1 mile