1. Percents and Equations
COURSE 3 LESSON 6-4
Use an equation. 12 is 8% of what number?
12 = 0.08 • w
Write a percent equation. = 12
0.08
0.08w
Divide each side by 0.08.
Simplify.
150 = w
6-4

2. Percents and Equations
COURSE 3 LESSON 6-4
Use an equation. What percent of 50 is 7?
7 = P • 50
Write a percent equation. = 7 50
P • 50
Divide each side by 50.
Simplify.
0.14 = P
Write the decimal as a percent.
14% = P
6-4

3. Percents and Equations
COURSE 3 LESSON 6-4
Use an equation to solve.
1. Find 81% of 110.
2. You buy a book for $ Sales tax is 8%.
What is the sales tax cost of the book?
3. 45 is 75% of what number?
4. Find what percent 68 is of 80.
89.1
$1.42 60
85%
6-4