Word math question

Question

3 students got some big wheels for a cart they built. The wheels had 150cm circumference (48cm diameter). The wheel had a four tooth gear attached to the hub. They got an eight tooth gear to drive the wheel. How far does the wheel roll over the ground each time the eight tooth gear goes clear around once?

Answer 1

A lot of unnecessary information given!

The circumference is 150 cm. therefore the wheel travels 150 cm every revolution.

(The eight tooth gear thing does not have anything to do with the solution!)