Solve the problem.
-Tom Quig traveled 290 miles east of St. Louis. For most of the trip he averaged 70 mph, but for one period of time he was slowed to 20 mph due to a major accident. If the total time of travel was 7 hours, how many miles
Did he drive at the reduced speed?
A) 80 mi
B) 100 mi
C) 90 mi
D) 75 mi

Question

Quizplus · Accepted Answer

Let x be the distance traveled at 20 mph. Then, the distance traveled at 70 mph is 290 - x. The time for each part of the trip is x/20 and (290-x)/70. The total time is 7 hours: x/20 + (290-x)/70 = 7. Solving this equation gives x = 80 miles.

Solve the Problem. -Tom Quig Traveled 290 Miles East of St. Louis. for St