We created two variables to store the original `price`

of a product in dollars and the `discount`

**percentage** applied to that price.

Use these two variables and **arithmetic operations** to compute and print the discount amount **in dollars**.

**Example:**

For example, if `price`

was `150`

and `discount`

was `10`

, the answer would be `15`

.

Why? Because the discount is 10%. And 10% of 150 dollars is 15 dollars.

In this lesson, we will learn how to calculate the discount amount given the original price of a product and the discount percentage. This is a common task in various applications such as e-commerce websites, billing systems, and financial software. Understanding how to perform this calculation is essential for developers working in these domains.

Before diving into the solution, let's understand the basic concepts:

**Price:**The original cost of the product before any discounts.**Discount Percentage:**The percentage by which the original price is reduced.**Discount Amount:**The actual amount deducted from the original price.

To calculate the discount amount, we use the formula:

`Discount Amount = (Price * Discount Percentage) / 100`

This formula helps us determine the portion of the price that is reduced based on the given discount percentage.

Let's break down the key concepts and techniques involved:

**Variables:**We will use variables to store the price and discount percentage.**Arithmetic Operations:**We will use multiplication and division to calculate the discount amount.

By applying these concepts, we can easily compute the discount amount.

Let's look at a few examples to understand how to apply these concepts:

**Example 1:**

```
Price: 200
Discount Percentage: 15
Discount Amount = (200 * 15) / 100 = 30
```

**Example 2:**

```
Price: 350
Discount Percentage: 20
Discount Amount = (350 * 20) / 100 = 70
```

These examples demonstrate how to calculate the discount amount for different prices and discount percentages.

Here are some common mistakes to avoid and best practices to follow:

**Incorrect Formula:**Ensure you use the correct formula to calculate the discount amount.**Data Types:**Use appropriate data types for price and discount percentage to avoid precision issues.**Code Readability:**Write clear and readable code with proper variable names and comments.

For more advanced scenarios, you might need to handle additional factors such as:

**Multiple Discounts:**Applying multiple discounts sequentially or cumulatively.**Conditional Discounts:**Applying discounts based on certain conditions or thresholds.

These techniques can be implemented by extending the basic formula and adding conditional logic.

Here is the Java code to calculate the discount amount:

```
public class DiscountCalculator {
public static void main(String[] args) {
// Define the price and discount percentage
double price = 150.0;
double discountPercentage = 10.0;
// Calculate the discount amount
double discountAmount = (price * discountPercentage) / 100;
// Print the discount amount
System.out.println("The discount amount is: $" + discountAmount);
}
}
```

This code snippet demonstrates how to calculate and print the discount amount using the given price and discount percentage.

To ensure your code works correctly, follow these tips:

**Print Statements:**Use print statements to verify intermediate values and calculations.**Test Cases:**Write test cases with different prices and discount percentages to validate your code.

Example test case:

`Price: 100, Discount Percentage: 5, Expected Discount Amount: 5`

When approaching problems related to discount calculations:

**Break Down the Problem:**Divide the problem into smaller steps, such as reading input, performing calculations, and printing output.**Practice:**Solve similar problems to improve your understanding and skills.

In this lesson, we covered how to calculate the discount amount given the original price and discount percentage. We discussed the basic concepts, provided examples, and shared best practices. By mastering these concepts, you can handle various discount-related calculations in real-world applications.

For further reading and practice, check out these resources: