Final answer:
To find the selling price of one apple, use the formula: Selling Price = Cost Price + Profit. In this case, the selling price of one apple is equal to the cost price plus the gain.
Step-by-step explanation:
Let's define the selling price of one apple as x dollars. Given that the seller gains a profit, we can say that the cost price of one apple is less than the selling price.
If the seller sells 25 apples, the total profit made is equal to 25 times the gain. So the profit made from selling 25 apples is 25 times the gain.
To find the selling price, we can use the formula: Selling Price = Cost Price + Profit. In this case, the selling price of one apple is equal to the cost price plus the gain. So, the selling price of one apple can be calculated as x = Cost Price + Gain.