Algebra-1

To determine the number of science books and storybooks, we can set up a system of equations based on the given information.

Let x be the number of science books and y be the number of storybooks.

We know that there are 100 science books and storybooks in total. This information can be translated into the equation: x + y = 100

We also know that each popular science book costs $8, and each storybook costs $10. Thus, the equation representing the total costs can be written as: 8x + 10y = 860, then

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