Answer:
5 Days
Step-by-step explanation:
Step 1: Make an expression
150 - 7.50x = 112.50
Step 2: Solve the expression for x
150 - 7.50x - 150 = 112.50 - 150
-7.50x / -7.5 = -37.5 / -7.5
x = 5
Answer: 5 Days
Spent in x days: 7.50x
Initial - spent = remaining
If x is also to be found:
150-112.5 = 7.5x
37.5 = 7.5x
x = 37.5/7.5
