SOLUTION: A certain model of car with a normal engine costs $11,000 to purchase and 22 cents a mile to operate. The same car with a fuel-injection engine costs $11,300 to purchase but only 2

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Question 269293: A certain model of car with a normal engine costs $11,000 to purchase and 22 cents a mile to operate. The same car with a fuel-injection engine costs $11,300 to purchase but only 20 cents a mile to operate. After how many mile does the total cost of both cars become the same?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
11000+.22x=11300+.2x
.02x=300
x=47000 miles