Some engies require oil to be mixed with gasoline. For every gallon of gas used, 4 ounces of oil should be added. How much gas is needed if 12 ounces of oil are used?

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Grade: Education Subject: mathematics
Some engies require oil to be mixed with gasoline. For every gallon of gas used, 4 ounces of oil should be added. How much gas is needed if 12 ounces of oil are used?
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1 gallon of gas requires 4 ounces of oil
X gallons of gas require 12 ounces of oil
1/4 = x/12
4x = 12
x = 12/4
x = 3
.
Therefore , 3 gallons of gas are needed.