Answer:
The mileage must the new model get so that the manufacturer meets the government requirement is 59 mpg.
Explanation:
Consider the provided information.
Here it is given that the average mpg for the four models manufactured is 24 mpg.
The total mpg for the four models = 4 × 24 = 96
The manufacturer will add a model and the government standard is 31 mpg.
This can be written as:




Hence, the mileage must the new model get so that the manufacturer meets the government requirement is 59 mpg.