Tom Quig traveled 290 mi 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 hr, how many miles did he drive at the reduced speed?
Suppose he drove for x miles at the reduced speed. Because the total traveling ...
This provides an example of solving a word problem regarding average speed.