1. Solving Percent Problems Using Proportions
COURSE 2 LESSON 6-5
What percent of 150 is 45?
You can write a proportion to find the percent. = 45
150 n
100
Write a proportion.
Write the cross products.
150n = 45(100)
150n
150
Divide each side by 150.
45(100) =
n = 30
Simplify.
45 is 30% of 150.
6-5

2. Solving Percent Problems Using Proportions
COURSE 2 LESSON 6-5
In a grocery store with 15 aisles, 3 aisles have bread and cereals. What percent of the store aisles have bread and cereals?
The model shows the relationship. = 3 15 n
100
Write a proportion.
Write the cross products.
15n = 3(100)
15n 15
3(100) =
Divide each side by 15.
n = 20
Simplify.
20% of the store aisles have bread and cereal.
6-5