Utilizing the “What is X Percent of Y Calculator”, we can compute that 70% of 20 equals 14.

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Tips: Directly enter the numerical values. The calculator will automatically calculate the result.

Step-by-Step Solution: What is 70% of 20?

Now that we know we want to find 70% of 20, 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 70 percent of 20 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 70%.

The whole is the total amount. In this case, the whole is 20.

Step 2: Write the percentage as a decimal by dividing it by 100:

70% = 70/100 = 0.7

Step 3: Multiply the decimal form of percentage by the whole amount:

0.7 * 20 = 14

Therefore, 70% of 20 is 14.

Let’s look at this visually:

70% * 20 = 70/100 * 20 = 0.7 *20 = 14

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 70% of 20 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 70% of 20. 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 70% of 20
• The Whole is 20
• The Percentage is 70

Substitute into the equation:

In this case, we can multiply both sides of the equation by 20

20 *x/20 = 70/100 * 20

x = 70 /100 * 20 = 1400/100 = 14

Therefore, 70% of 20 is 14.

Comparing the Methods

Both methods arrive at the same solution:

• Method 1 gets the solution by converting 70% to 0.7 and multiplying by 20.
• 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 20 is 14.

What Percent of 20 is 14?

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 14
• The Whole is 20

Substitute into the equation:

14/20 = 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 14
• 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 (20)

When written out, the cross multiplication looks like:

14 * 100 = x * 20

x * 20 = 14 * 100

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Then we can solve the resulting equation:

x * 20 = 1400

x = 70

Therefore, the answer is that 70% of 20 is 14.

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 14 is 70 Percent of What Number.

14 is 70 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 14
• The Percentage is 70

Substitute into the equation:

14/x = 70/100

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 14
• 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 (70) multiplied by the denominator of the first half (x)

When written out, the cross multiplication looks like:

14 * 100 = 70 * x

x * 70 = 14 * 100

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Then we can solve the resulting equation:

x * 70 = 1400

x = 20

Therefore, the answer is that 14 is 70% of 20.

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% 14 / 20 x 100% = 70% Find what percentage a part is of a whole Part / Percentage 14 / 70% = 20 Find the part given the whole and percentage Whole x Percentage 20 * 70% =14

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 20 Calculation Examples

5 Percent of 20 = 5/100 * 20 = 0.05 * 20 = 1

10 Percent of 20 = 10/100 * 20 = 0.1 * 20 = 2

15 Percent of 20 = 15/100 * 20 = 0.15 * 20 = 3

20 Percent of 20 = 20/100 * 20 = 0.2 * 20 = 4

25 Percent of 20 = 25/100 * 20 = 0.25 * 20 = 5

30 Percent of 20 = 30/100 * 20 = 0.3 * 20 = 6

35 Percent of 20 = 35/100 * 20 = 0.35 * 20 = 7

40 Percent of 20 = 40/100 * 20 = 0.4 * 20 = 8

45 Percent of 20 = 45/100 * 20 = 0.45 * 20 = 9

50 Percent of 20 = 50/100 * 20 = 0.5 * 20 = 10

55 Percent of 20 = 55/100 * 20 = 0.55 * 20 = 11

60 Percent of 20 = 60/100 * 20 = 0.6 * 20 = 12

65 Percent of 20 = 65/100 * 20 = 0.65 * 20 = 13

70 Percent of 20 = 70/100 * 20 = 0.7 * 20 = 14

75 Percent of 20 = 75/100 * 20 = 0.75 * 20 = 15

80 Percent of 20 = 80/100 * 20 = 0.8 * 20 = 16

85 Percent of 20 = 85/100 * 20 = 0.85 * 14 = 17

90 Percent of 20 = 90/100 * 20 = 0.9 * 20 = 18

95 Percent of 20 = 95/100 * 20 = 0.95 * 20 = 19

100 Percent of 20 = 100/100 * 20 = 1 * 20 = 20

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