The federal government requires a car manufacturer to have a minimum miles per gallon (mpg) average over the models it makes. Suppose that the mpg's for four of the five models of a manufacturer are 19, 22, 28, and 26, and the manufacturer just meets the government standard of 31 mpg. Find the mileage for the fifth model.

Question

Quizplus · Accepted Answer

To meet the average of 31 mpg over 5 models, the total mpg must be 31 * 5 = 155. The sum of the given mpgs is 19 + 22 + 28 + 26 = 95. Therefore, the fifth model must have 155 - 95 = 60 mpg.

The Federal Government Requires a Car Manufacturer to Have a Minimum