Answer:
5 hours
Step-by-step explanation:
First, create 2 expressions that represent the cost with each company, where x is the number of hours.
Practical Perfect Painting will be represented by 25x + 125, since it is 25 dollars per hour, plus the prep work cost.
Excellent Exteriors will be represented by 20x + 150.
Then, set these equal to each other and solve for x. This x value will be the number of hours that make the cost the same.
25x + 125 = 20x + 150
5x + 125 = 150
5x = 25
x = 5
So, it will take 5 hours for the cost of the companies to be the same