Answer:
20000
Step-by-step explanation:
115%-> 23000
100%->20000
To find the inverse interchange the variables and solve for y
We need to create two expressions, then equate them in order to find the numbers of hours.
Let X = Number of hours
Let 1200+18x = Company A (Flat Fee + Hourly Rate*Hours)
Let 900+23x = Company B

After 60 hours, the prices will be the same