Answer:
10 hours
Explanation:
Let A be the Princeton Salon and B is Beauty by Angle.
Build a table that contains the information. See attached.
The cost, y, for x hours, for each option would be:
A: y(A) = 50 + 25x
B: y(B) = 0 + 30x
We want to find the hours, x, for which both options, so set them equal to each other:
50 + 25x = 0 + 30x
-5x = 150
x = 10 hours
The table confirms this calculation.