Aldo drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 8 hours. When Aldo drove home, there was no traffic and the trip only took 5 hours. If his average rate was 21 miles per hour faster on the trip home, how far away does Aldo live from the mountains? Do not do any rounding.

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24 July, 04:33

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Desmond · Answer 1

8x = 5 (x+21)

8x = 5x + 105

3x = 105

x = 105 / 3

x = 35

8 x 35 = 280 miles away