Question

Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 3 liters of natural oil for every 5 liters of synthetic oil. If 189 liters of natural oil are used, how many liters of Petrolyn oil will be made?

Answer 1

3/5 = x/400Multiply both sides by 400 to get;
x=(3/5)400
x=3*80
x=240 liters of Petrol oil

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