A storeowner orders 25 calculators that cost ​$2929 each. The storeowner can sell each calculator for ​$3939. The storeowner sold 22 calculators to customers. He had to return 3 calculators that were never sold and pay a ​$55 charge for each returned calculator​ (although the initial cost is​ refunded). What is the​ storeowner's profit?

Let's break down the problem step by step:

### Step 1: Cost of buying the calculators
- The storeowner buys 25 calculators, each costing $2929.
- The total cost of purchasing the calculators is:
  \[
  25 \times 2929 = 73,225
  \]

### Step 2: Revenue from selling 22 calculators
- The storeowner sold 22 calculators, each for $3939.
- The total revenue from selling the calculators is:
  \[
  22 \times 3939 = 86,658
  \]

### Step 3: Handling the 3 returned calculators
- The storeowner had to return 3 calculators. Since the initial cost of each calculator is refunded, the total refund is:
  \[
  3 \times 2929 = 8,787
  \]
- However, the storeowner must pay a $55 charge for each returned calculator, so the total charge for returning the calculators is:
  \[
  3 \times 55 = 165
  \]

### Step 4: Profit Calculation
Now, let's calculate the profit:

- **Revenue from sales**: $86,658
- **Refund for returned calculators**: $8,787
- **Total income**: $86,658 (sales) + $8,787 (refund) = $95,445
- **Total cost**: $73,225 (initial cost) + $165 (return charges) = $73,390

### Final Profit:
\[
\text{Profit} = \text{Total income} - \text{Total cost} = 95,445 - 73,390 = 22,055
\]

Thus, the storeowner's profit is **$22,055**.

Would you like to go into more details or have any questions about the steps?

### 5 Related Questions:
1. How would the profit change if the storeowner sold all 25 calculators?
2. What would be the impact on profit if the return charge was higher?
3. How would the calculations change if the cost of each calculator varied?
4. What if only 20 calculators were sold and 5 were returned?
5. How is the return charge calculated as part of the overall expenses?

### Tip:
Always keep track of both income and expenses in any business problem to ensure an accurate profit calculation.

Learn how to calculate the storeowner's profit when selling calculators. The problem covers key mathematical concepts like calculating revenue, handling refunds, and determining total profit. Suitable for students in Grades 6-8.

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