To achieve the maximum profit per product sold, you will need to look for the peak of the curve on the graph you described. Based on the approximate points provided:
- At 100 products sold, the profit per product is 20 dollars.
- At 300 products sold, the profit per product is 34 dollars (the highest point).
- At 400 products sold, the profit per product is 30 dollars.
- At 500 products sold, the profit per product is 25 dollars.
The maximum profit per product sold occurs at 300 products sold, where the profit per product reaches 34 dollars.
Therefore, to achieve the maximum profit per product sold, this business will need to sell 300 products.