Mathematics Enhanced Sample Scope and Sequence

A store had a sale on two different models of calculators. One model sold for $89.75, and another model sold for $72.45. In all, 51 calculators were sold, and the total amount of sales (not including the tax) was $4,335.05. How many of each model were sold during this sale? The perimeter of a rectangle is 88 cm. ................
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