Question

A company offers a rate of $.05 per minute. How would you find the unit rate per hour?

Answer 1

$\ 0.05\ per\ minute=0.05\ \ /min\\\\1h=60min\Rightarrow1min=\frac{1}{60}h\\\\therefore\\\\0.05\ \ /min=0.05\cdot\frac{\ }{\frac{1}{60}\ h}=0.05\cdot60\ \ /h=\boxed{3\ \ /h}$