Linda makes and sells necklaces at craft fairs. At her most recent fair she sold 4 necklaces and 8 rings for a total of $80. If each necklace costs $12, how much does each ring cost?
Let’s work this out in a step by step way to be sure we have the right answer.
4
Let’s use r for the cost of each necklace.

4 * 12 + 8 * r = 80.

48 + 8 * r = 80.

8 * r = 80 - 48 = 32.

8r = 32.

r = 4 dollars for each ring.

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So, the answer is 4