Question

Tom Quig traveled 260 miles east of St. Louis. For most of the trip he averaged 60 mph, but for

3)

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?

Answer 1

I think it's 4 hours because 60 times 2 is 180.
260 minus 180 is 80. 80 divided by 20 is 4.
4 plus 3 is 7