Solving Percent Problems Using Proportions

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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

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