SOLUTION: A family determined the average cost of maintaining and operating the family car to be about $.30 per mile. On one trip, the family drove at an average rate of 50 miles per hour fo

Question 456938: A family determined the average cost of maintaining and operating the family car to be about $.30 per mile. On one trip, the family drove at an average rate of 50 miles per hour for a total of 6.5 hours. On the second trip, they drove at an average rate of 55 miles per hour for a total of 6 hours. which trip cost more? how much more?
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Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
50x6.5=325
55x6=330
The second trip cost more by 5x.30=$1.50
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