A woman earns $600 for her first 40 hours in a week and then is paid one and one half times

Question

A woman earns $600 for her first 40 hours of work in week and then is paid one-and one half times her regular rate for any additional hours, how many must she work to make $690 in a week?

Answer 1

She makes $15 / hour ($600 / 40 hour)

For overtime she makes $22.50

$90 / $22.50 = 4

She must work 44 hours