# algebra

there are people walking their dogs at a park. There are 30 heads and 68 feet at the park. Write out the algebraic equations for this problem. Use P to stand for the number of people and D to stand for the number of dogs.

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### Answers

The equation that represents this problem is 2P + 4D = 68, since there are two feet per person and four feet per dog. The equation P + D = 30 represents the problem as well, since there are one head per person and one head per dog.