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Published byXavier Ferguson Modified over 2 years ago

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The Real Cost When you save to make a big purchase, be sure to consider the sales tax you will have to pay. Have you ever paid sales tax?

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Lesson Objective Find the best buy based on unit price. Content Vocabulary comparison shopping comparison pricing Comparing prices to find the best value.

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Oatmeal is sold in three sizes. The price of an 18-ounce package is $1.86. The price of a 42-ounce package is $3.17. The price of a 112-ounce package is $6.29. Based on price alone, which package is the best buy? Example 1

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Find the unit price for each item. Price per Item ÷ Measure or Count 18-ounce package: $1.86 ÷ 18 = $ $ × 100 = 10.33¢ per ounce Example 1 Answer: Step 1

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42-ounce package: $3.17 ÷ 42 = $ $ × 100 = 7.55¢ per ounce 112-ounce package: $6.29 ÷ 112 = $ $ × 100 = 5.62¢ per ounce Example 1 Answer: Step 1 (cont.)

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Find the best buy. Compare: 10.33¢, 7.55¢, and 5.62¢ per ounce The 112 ounce package at 5.62¢ per ounce is the best buy. Example 1 Answer: Step 2

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Bounce fabric softener sheets are sold in an 80-count box for $3.17, a 120-count box for $4.44, and a 160-count box for $6.24. What is the unit price for each? Which is the best buy? Practice 1

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$3.17 ÷ 80 = $ = 3.96¢ per sheet $4.44 ÷ 120 = $0.037 = 3.7¢ per sheet $6.24 ÷ 160 = $0.039 = 3.9¢ per sheet The 120-count size is the best buy. Practice 1 Answer

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