Pablo was reviewing the water bill for his carwash business and determined that the highest bill, $5400, occurred in July when 2700 cars were washed and the lowest bill, $3100, occurred in February when 1500 cars were washed. What was the variable cost per carwash?

Question

Quizplus · Accepted Answer

The variable cost per carwash can be calculated by finding the difference in costs and the difference in the number of cars washed, then dividing the cost difference by the car difference. The difference in costs is $5400 - $3100 = $2300. The difference in the number of cars washed is 2700 - 1500 = 1200 cars. Therefore, the variable cost per carwash is $2300 / 1200 = $1.92.

Pablo Was Reviewing the Water Bill for His Carwash Business