Solve the problem.
-During a hurricane evacuation from the east coast of Georgia, a family traveled 250 miles west. For part ofthe trip, they averaged 60 mph, but as the congestion got bad, they had to slow to 20 mph. If the total timeof travel was 6 hours, how many miles did they drive at the reduced speed?
A)55 mi
B)60 mi
C)65 mi
D)50 mi

Question

Quizplus · Accepted Answer

The family traveled 250 miles in 6 hours, so their average speed was 250/6 = 41.67 mph. Since they traveled at 60 mph for part of the trip, they must have traveled at 20 mph for the rest of the trip. Let x be the number of miles they traveled at 20 mph. Then, we have:60 * (6 - x/60) + 20 * (x/60) = 250360 - 6x + 20x = 25014x = 110x = 7.86Therefore, the family traveled 7.86 miles at the reduced speed.

Solve the Problem. -During a Hurricane Evacuation from the East Coast of Georgia