Answer :
Roxanna's normal hourly pay is $ 12
Solution:
Lets assume Roxanna's normal hourly pay = "x"
As overtime pay is 1.5 times of normal pay
So Roxanna's overtime hourly pay = [tex]x \times 1.5 = 1.5x[/tex]
Also given in 4 hours, in overtime Roxanna earned $72.00
So in 1 hour, in overtime Roxanna earned = [tex]\frac{72}{4} = 18[/tex]
That means Roxanna's overtime hourly pay = 18
Also we have calculated Roxanna's overtime hourly pay in terms of "x" that is 1.5x
=> 1.5x = 18
=> [tex]x = \frac{18}{1.5} = 12[/tex]
Roxanna’s normal hourly pay = x = $12