Jenny drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took
hours. When Jenny drove home, there was no traffic and the trip only took
hours. If her average rate was
miles per hour faster on the trip home, how far away does Jenny live from the mountains?
Stacey Warren - Expert brainly.com
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We only need the speed going back home. So:
\[f(7) = 18(7) = 126\]
Jenny lives 126 miles from the mountains.
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420miles was the anwser
I read over the *faster than* clause. My bad
Two cars leave towns
kilometers apart at the same time and travel toward each other. One car's rate is
kilometers per hour more than the other's. If they meet in
hours, what is the rate of the faster car?