what is 20 of $42

Natashya

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22-12-2024

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What is 20% of $42? A Simple Percentage Calculation

Finding 20% of $42 is a straightforward percentage calculation with a couple of methods to solve it. Whether you're splitting a bill, calculating a discount, or tackling a math problem, understanding how to calculate percentages is a valuable skill. This article will show you two ways to arrive at the answer: using a decimal and using a fraction.

Method 1: Using Decimals

To find 20% of $42, we first convert the percentage to a decimal. Remember that percentages are just fractions out of 100. Therefore, 20% is equivalent to 20/100, which simplifies to 0.20 or just 0.2.

Next, we multiply this decimal by the original amount:

0.2 * $42 = $8.40

Therefore, 20% of $42 is $\boxed{8.40}.

Method 2: Using Fractions

Alternatively, we can express 20% as a fraction: 20% = 20/100 = 1/5.

Now, we multiply this fraction by $42:

(1/5) * $42 = $42 / 5 = $8.40

Again, we arrive at the same answer: 20% of $42 is $\boxed{8.40}.

Understanding Percentages in Everyday Life

Calculating percentages isn't just for math class. It's a practical skill used daily in various situations, including:

• Sales and Discounts: Finding the final price after a percentage discount.
• Taxes: Calculating the amount of tax added to a purchase.
• Tips: Determining the appropriate tip amount in a restaurant.
• Financial Calculations: Understanding interest rates and investment returns.
• Data Analysis: Interpreting statistical data presented as percentages.

Mastering percentage calculations empowers you to confidently handle financial transactions, make informed decisions, and better understand the world around you. Whether you prefer the decimal or fraction method, understanding the underlying principles will make calculating percentages quick and easy. Remember, practice makes perfect!