SOLUTION: A car used 7 gallons of gasoline to go a distance of 210 miles. At that rate, how much gasoline would the car use to go 495 miles?

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Question 478740: A car used 7 gallons of gasoline to go a distance of 210 miles. At that rate, how much gasoline would the car use to go 495 miles?
Found 2 solutions by rfer, Alan3354:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
7/120=x/495
120x=3465
x=28.9 gal

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
210/7 = 30 mph
495/30 = 16.5 gallons
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or
210:7::495:x
210x = 7*495
x = 7*495/210 = 16.5 gallons
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The other tutor made a typo, did 120 miles, but that'll be useful if you plan a 120 mile trip sometime.