Question

the speed of a gear wheel varies inversely as the number of teeth of the gear. if a gear wheel which has 48 teeth makes 3 revolutions per minute. how many revolutions per minute will a gear wheel with 96 teeth make?

Answer 1

twice the teeth means half the revolutions

teeth * speed = k = 48 * 3 = 144

96 * s = 144 ... s = 144 / 98