Answer:
4
Explanation:
80 / 5 = 16 so he can drive 16 miles on 1 gallon of gas
64 / 16 = 4 gallons of gas
4 gallons
80/5 will give you 16 so for each gallon the car can move 16 milles
so 64/16 = 4 so he will need 4 gallons of gas in order make the trip
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