1. Solving Percent Problems Using Equations
COURSE 2 LESSON 6-6
Use an equation to solve: 32% of 40 is what number?
Words A number is 32% of 40.
Let n = the number.
Equation
n = • 40
n = 0.32 • 40 = 12.8
Simplify.
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2. Solving Percent Problems Using Equations
COURSE 2 LESSON 6-6
Use an equation to solve: 18% of what number is 81?
Words 18% of a number is 81.
Let n = the number.
Equation
0.18 • n = 81
0.18n =
Divide each side by 0.18.
n = 450
Simplify.
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3. Solving Percent Problems Using Equations
COURSE 2 LESSON 6-6
Use an equation to solve: What percent of 200 is 45?
Let p = the percent.
Words A percent of is 45.
p • 200 = 45
Equation
p • 200 = 45
Simplify.
200p = 45
200p =
Divide each side by 200.
p = 0.225
Use a calculator.
p = 22.5%
Write the decimal as a percent.
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4. Solving Percent Problems Using Equations
COURSE 2 LESSON 6-6
Write and solve an equation.
1. 6% of 38 is what number?
2. 40% of what number is 24?
3. What percent of 52 is 13?
4. 96% of what number is 240?
n = 6% • 38; 2.28
24 = 40% • n; 60
13 = n% • 52; 25%
240 = 96% • n; 250
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