Utilizing the “What is X Percent of Y Calculator”, we can compute that 20% of 500 equals 100.
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Tips: Directly enter the numerical values. The calculator will automatically calculate the result.
Step-by-Step Solution: What is 20% of 500?
Now that we know we want to find 20% of 500, let’s look at two different step-by-step methods we can use to solve this percentage problem. Each approach arrives at the same solution, but understanding different ways to think through the math builds flexibility and deeper learning.
Method 1: Convert the Percent to a Decimal and Multiply
One approach to finding 20 percent of 500 is to convert the percent to a decimal and multiply. Here are the steps:
Step 1: Identify the part and whole
The part is the amount we want as a percentage. In this case, it is 20%.
The whole is the total amount. In this case, the whole is 500.
Step 2: Write the percentage as a decimal by dividing it by 100:
20% = 20/100 = 0.2
Step 3: Multiply the decimal form of percentage by the whole amount:
0.2 * 500 = 100
Therefore, 20% of 500 is 100.
Let’s look at this visually:
20% * 500 = 20/100 * 500 = 0.2 *500 = 100
This approach of converting the percentage to a decimal and multiplying is straightforward and can be applied to any “percent of number” problem. The key is properly converting the percent to a decimal by dividing by 100.
Method 2: Finding Percentages Using Algebraic Equations
Another way to find 20% of 500 is to set up an algebraic equation and solve it. Here are the steps:
A proportion is an equation that states two ratios are equivalent. Here is the proportion formula:
Part/Whole = Percentage/100
Step 1: Define the Unknown Variable
Let’s define an unknown variable x to represent 20% of 500. In algebraic equations, variables are used to represent unknown values.
Step 2: Set Up the Equation
Using the variable x, we can set up an equation with the information given:
- The unknown variable x (Part) is the amount we want to find, which is 20% of 500
- The Whole is 500
- The Percentage is 20
Substitute into the equation:
In this case, we can multiply both sides of the equation by 500
500 *x/500 = 20/100 * 500
x = 20 /100 * 500 = 10000/100 = 100
Therefore, 20% of 500 is 100.
Comparing the Methods
Both methods arrive at the same solution:
- Method 1 gets the solution by converting 20% to 0.2 and multiplying by 500.
- Method 2 sets up an equation, defines a variable, and solves algebraically.
The decimal conversion method is straightforward, avoiding any algebra. But the algebraic method is more flexible for complex problems where defining variables and setting up equations is helpful.
Common Percentage Scenarios
Here are some common percentage scenarios and how to solve them:
Finding the Percentage Given the Part and Whole
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Here is the proportion formula:
Part/Whole = Percentage/100
We will now demonstrate how to utilize proportion formula to calculate the percentage given a part and whole amount through an example determining what percent of 500 is 100.
What Percent of 500 is 100?
Step 1: Define the Unknown Variable
Let unknown variable x = the unknown percent we want to find..
Step 2: Set Up the Equation
Using the variable x, we can set up an equation with the information given:.
- The unknown variable x (Percentage) is the number we want to find.
- The Part is 100
- The Whole is 500
Substitute into the equation:
100/500 = x/100
Step 3: Solve the Equation
To isolate x, we can cross multiply as follows:
- Take the numerator of one side of the equation, which is 100
- Multiply it by the denominator of the other side of the equation, which is 100
- Set that equal to the numerator of the second half (x) multiplied by the denominator of the first half (500)
When written out, the cross multiplication looks like:
100 * 100 = x * 500
x * 500 = 100 * 100
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Then we can solve the resulting equation:
x * 500 = 10000
x = 20
Therefore, the answer is that 20% of 500 is 100.
Finding the Whole Given the Percentage and Part
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Here is the proportion formula:
Part/Whole = Percentage/100
We will now demonstrate how to utilize proportion formula to calculate the whole given the percentage and part through an example determining 100 is 20 Percent of What Number.
100 is 20 Percent of What Number?
Step 1: Define the Unknown Variable
Let unknown variable x = the unknown number we want to find.
Step 2: Set Up the Equation
Using the variable x, we can set up an equation with the information given:
- The unknown variable x ( Whole) is the number we want to find.
- The Part is 100
- The Percentage is 20
Substitute into the equation:
100/x = 20/100
Step 3: Solve the Equation
To isolate x, we can cross multiply as follows:
- Take the numerator of one side of the equation, which is 100
- Multiply it by the denominator of the other side of the equation, which is 100
- Set that equal to the numerator of the second half (20) multiplied by the denominator of the first half (x)
When written out, the cross multiplication looks like:
100 * 100 = 20 * x
x * 20 = 100 * 100
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Then we can solve the resulting equation:
x * 20 = 10000
x = 500
Therefore, the answer is that 100 is 20% of 500.
Common Percentage Calculations
Here is a quick reference table of some typical percentage calculations:
Calculation Formula Example Find what percentage a part is of a whole Part / Whole x 100% 100 / 500 x 100% = 20% Find what percentage a part is of a whole Part / Percentage 100 / 20% = 500 Find the part given the whole and percentage Whole x Percentage 500 * 20% =100
Having these common formulas memorized can make solving a variety of percentage problems quicker. When in doubt, break things down step-by-step into smaller pieces.
Standard Percentage of 500 Calculation Examples
5 Percent of 500 = 5/100 * 500 = 0.05 * 500 = 25
10 Percent of 500 = 10/100 * 500 = 0.1 * 500 = 50
15 Percent of 500 = 15/100 * 500 = 0.15 * 500 = 75
20 Percent of 500 = 20/100 * 500 = 0.2 * 500 = 100
25 Percent of 500 = 25/100 * 500 = 0.25 * 500 = 125
30 Percent of 500 = 30/100 * 500 = 0.3 * 500 = 150
35 Percent of 500 = 35/100 * 500 = 0.35 * 500 = 175
40 Percent of 500 = 40/100 * 500 = 0.4 * 500 = 200
45 Percent of 500 = 45/100 * 500 = 0.45 * 500 = 225
50 Percent of 500 = 50/100 * 500 = 0.5 * 500 = 250
55 Percent of 500 = 55/100 * 500 = 0.55 * 500 = 275
60 Percent of 500 = 60/100 * 500 = 0.6 * 500 = 300
65 Percent of 500 = 65/100 * 500 = 0.65 * 500 = 325
70 Percent of 500 = 70/100 * 500 = 0.7 * 500 = 350
75 Percent of 500 = 75/100 * 500 = 0.75 * 500 = 375
80 Percent of 500 = 80/100 * 500 = 0.8 * 500 = 400
85 Percent of 500 = 85/100 * 500 = 0.85 * 100 = 425
90 Percent of 500 = 90/100 * 500 = 0.9 * 500 = 450
95 Percent of 500 = 95/100 * 500 = 0.95 * 500 = 475
100 Percent of 500 = 100/100 * 500 = 1 * 500 = 500
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