One pulley is twice as large in diameter as a second pulley. If the larger pulley turns at 259 rpm, what is the rpm of the smaller?
A) 518 rpm
B) 129.5 rpm
C) 538 rpm
D) 1,076 rpm
E) 522 rpm

Question

Quizplus · Accepted Answer

The speed of the smaller pulley will be twice that of the larger pulley because it has half the diameter. Therefore, if the larger pulley turns at 259 rpm, the smaller pulley will turn at 259 * 2 = 518 rpm.

One Pulley Is Twice as Large in Diameter as a Second