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The fuel mix for a small engine contains only 2 ingredients: gasoline and oil. If the mix requires 5 ounces of gasoline for every 6 ounces of oil, how many ounces of gasoline are needed to make 33 ounces of fuel mix?

Sagot :

5x + 6x = 33
11x = 33
x = 3

5x = 5 x 3 = 15 ounces of gasoline