Question

A wheel make 192 revolutions per minutes. how many revolutions does it make per second

Answer 1

$\frac{192 revs}{min} * \frac{1 min}{60 secs}$

The minutes cancel out leaving you with:

$\frac{192 revs}{60 secs}$ = 3.2 revs per second.

The wheel does 3.2 revolutions per second.