Asked by Scotch
Justin recently drove to visit his parents who live 480 miles away. On his way there his speed was 20 miles per hour faster than on his way home (he ran into bad weather). If Justin spent a total of 20 hours driving. Find the two rates.
Answers
Answered by
Steve
since time = distance/speed,
480/s + 480/(s+20) = 20
480/s + 480/(s+20) = 20
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