2. Chapter 6 Ratio, Proportion, and Line/Angle/Triangle Relationships
6.1 Ratios
Chapter 6 Ratio, Proportion, and
Line/Angle/Triangle Relationships

3. Write ratios as fractions.
Objectives
Write ratios as fractions.
Solve ratio problems involving decimals or mixed numbers.
Solve ratio problems after converting units.
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4. Objective 1: Write ratios as fractions.
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Sec

5. Objective 1: Write ratios as fractions.
Example
Ancestors of the Pueblo Indians built multistory apartment towns in New Mexico about 1100 years ago. A room might measure 14 feet long, 11 feet wide, and 15 feet high. Write the ratio of the length of a room to its width.
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Sec

6. Objective 1: Write ratios as fractions.
Example
Write the ratio of 60 days to 20 days as a fraction in lowest terms.
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Sec

7. Objective 1: Write ratios as fractions.
Example
Write the ratio of 50 ounces of medicine to 120 ounces of medicine as a fraction in lowest terms.
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Sec

8. Objective 2: Solve ratio problems involving decimals or mixed numbers.
Example
The price of a Sunday newspaper increased from $1.50 to $1.75. Find the ratio of the increase in price to the original price.
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Sec

9. Objective 2: Solve ratio problems involving decimals or mixed numbers.
Example
Write the ratio of 2 days to days as the ratio of two whole numbers in lowest terms.
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Sec

10. Objective 2: Solve ratio problems involving decimals or mixed numbers.
Example
Write the ratio of to as the ratio of two whole numbers in lowest terms.
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Sec

11. Objective 3: Solve ratio problems after converting units.
Example
Write the ratio of the length of the shorter board on the left to the length of the longer board on the right. Compare in inches.
First, express 2 feet in inches. Because 1 foot has 12 inches, 2 feet is
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Sec

12. Objective 3: Solve ratio problems after converting units.
Example
(continued)
The shorter board on the left is the length of the longer board on the right.
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Sec

13. Objective 3: Solve ratio problems after converting units.
Example
Write the ratio of 28 days to 3 weeks.
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Sec

14. Objective 3: Solve ratio problems after converting units.
Example
Write the ratio of 28 days to 3 weeks.
First, express 3 weeks in days. Because 1 week has 7 days, 3 weeks is
Copyright © 2010 Pearson Education, Inc. All rights reserved.
Sec

15. Objective 3: Solve ratio problems after converting units.
Copyright © 2010 Pearson Education, Inc. All rights reserved.
Sec