How many ounces of oil should be mixed with 6 gallons of gas if the ratio is to be 40 parts of gas to 1 part of oil?

Question

Latisha Oneil · Accepted Answer

Approach: The quotient of two numbers is called a ratio. Ex: 58 or 5:8 An equation indicating that two ratios are equal is called a proportion. Ex: 34=1520,pq=rs In the proportion, pq=rs, the numbers p and s are called extremes, and the numbers r and q are called the means. In any proportion, the product of the extremes is equal to the product of the means. Ex: ps=rq Calculation: First convert the 6 gallons into ounces. 1 gallons=128 ounces 6 gallons=6×128=768 ounces. Let x be the number of ounces of oil needed. Set up the proportion with given ratio and solve it. 401=768x By property of proportions, the product of the extremes is equal to the product of the means. 40×x=1×768 40x=768 x=76840 x=19.2 ounces Final statement: The number of ounces of oil that should be mixed with 6 gallons of gas, if their ratio is to be 40 parts of gas to 1 part of oil is 19.2 ounces.

Jeffrey Jordon · Accepted Answer

Answer is given below (on video)

How many ounces of oil should be mixed with 6

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