My question is: Romeo buys five bars of chocolate at $5 each and sells these chocolates for a total of $90. If he uses packaging material that costs him $2 for each bar of chocolate, how much profit does he make for all the chocolates he sells? Your thoughts:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The selling price for each bar of chocolate is 90 / 5 = $18. The profit for each bar of chocolate is 18 - 5 - 2 = $11. The total profit is 11 * 5 = $55. The final answer: 55.