Problema Solution

To sell an item in an online auction, WebAuctions charges a $5 listing fee plus 10% of the final selling price. AuctionsOnline charges a $3 listing fee plus 15% of the final selling price. For what final selling price do both companies charge the same amount? What will that amount be?

Answer provided by our tutors

Let 'x' represent the final selling amount on the item.

5 + 0.10x = 3 + 0.15x

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click here to see the equation solved for x

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x = $40

The final selling price that the both companies charge the same is $40.

The money charged by each of the companies is: 5 + 0.10*40 = $9.