Question 1187764
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Grammatically, the problem as posted says that the two of them together sold $22,500 worth of merchandise ("...they both sold $22,500 worth...")<br>
That makes it impossible to answer the question, because we don't know how much of that total was sold by each of them.<br>
If the intended meaning of the problem is that EACH of them sold $22,500 worth of merchandise, then re-post the problem using correct English, saying "...they each sold $22,500 worth...".<br>