The cost of a pencil is 25 cents more than the cost of an eraser. if the cost of 8 pencils is 0.80 more than the cost of 10 erasers, find the cost of each.

For this case we propose a system of equations:

x: Let the variable representing the cost of a pencil

y: Let the variable representing the cost of an eraser

We substitute the first equation in the second one:

Thus, the cost of an eraser is 99.6 cents.

On the other hand:

Thus, the cost of a pencil is 124.6 cents.

The cost of an eraser is 99.6 cents.

The cost of a pencil is 124.6 cents.

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step-by-step explanation:

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