Glencoe Math: Course 2, Volume 1
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Glencoe Math: Course 2, Volume 1 View details
4. The Percent Equation
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Exercise 2 Page 132

To solve problems that involve percent, use the percent equation.

Equation: 24 = n* 120
Solution: n = 20 %

Practice makes perfect

Let's start by recalling that we can use the percent equation to solve problems that involve percent. Percent Equation [0.3em] part = percent * whole We want to find what percent of 120 is 24. Let n represent the percent. 24 = n * 120 Now we will solve the equation that we got for n. To do so, we will use the Division Property of Equality.

24=n* 120
24/120=120n/120
24/120=120n/120
24/120=n
0.2 =n
n = 0.2

We found that n= 0.2 is a solution to the equation. To write the decimal as a percent, we need to move the decimal point two places to the right and write the percent symbol. 0.2 = 20 % We got that 24 is 20 % of 120.