Solve the problem.
-Sue drove her car 254 miles in January, 358 miles in February, and 459 miles in March. If her average mileage for the four months from January to April is to be at least 385 miles, how many miles must she drive in April?
A) at least 469 miles
B) at most 469 miles
C) at least 364 miles
D) at most 385 miles

Question

Quizplus · Accepted Answer

To find the minimum miles Sue must drive in April to have an average of at least 385 miles over four months, calculate the total miles for the first three months (254 + 358 + 459 = 1071 miles), then find the total needed for four months at 385 miles average (4 * 385 = 1540 miles). Subtract the first three months' total from this to get the minimum for April (1540 - 1071 = 469 miles).

Solve the Problem. -Sue Drove Her Car 254 Miles in January, 358 Miles