Solving a system of equations we can see that he repaired 15 of the fiberglass bathroom sinks and 8 of the fiberglass tub enclosures
Let's define the two variables:
x = number of fiberglass bathrooms repaired.
y = number of fiberglass tub enclosures repaired.
Then we can write the system of equations:
x + y = 23
x*$12 + y*$59 = $652
Isolating x on the first one, we get:
x = 23 - y
Replacing that in the other equation:
(23 - y)*$12 + y*$59 = $652
23*$12 + y*($59 - $12) = $652
23*$12 + y*$47 = $652
y = ($652 - 23*$12)/$47 = 8
Then:
x = 23 - y = 23 - 8 = 15
So, he repaired 15 of the fiberglass bathroom sinks and 8 of the fiberglass tub enclosures
If you want to learn more about systems of equations:
https://brainly.com/question/13729904
#SPJ1