SOLUTION: 2 oz.of soybean oil were mixed with 4 oz. of canola oil which costs $4/oz.to make vegetable oil which costs $3/oz.what is the price per oz. of soybean oil?

Question 1203429: 2 oz.of soybean oil were mixed with 4 oz. of canola oil which costs $4/oz.to make vegetable oil which costs $3/oz.what is the price per oz. of soybean oil?
Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Make accountings of the costs.

x, the price of soybean oil per ounce

Solving is uncomplicated.

-

---------- 1 dollar per ounce
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

A formal algebraic solution is good exercise, but solving the problem informally using logical reasoning is also good problem-solving practice.

The mixture is 2+4 = 6 ounces worth $3 per ounce, so the total value is 6($3) = $18.

The 4 ounces of canola oil worth $4 per ounce have a total value of 4($4) = $16.

So the 2 ounces of soybean oil must be worth $18-$16 = $2.

That makes the price per ounce of the soybean oil $2/2 = $1.

ANSWER: $1

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