Question

tom quig traveled 280 miles east of saint louis. for most of the trip he averaged 60mph, but for one period of time he was slowed to 10mph due to a major accident. if the total time of travel was 8 hours,how many miles did he drive at the reduced speed?

Answer 1

40

Answer 2

\[t=\frac{d}{r} \]Let s be the distance driven at reduced speed. Solve the following for s:\[\frac{s}{20}+\frac{280-s}{60}=8 \]\[s=100\text{ miles} \]

Answer 3

robto you have a typo, the slow speed is 10, not 20

Answer 4

Yup. A blunder of the first order.
Thank you for pointing this out.