Over Lesson 6–1 A.A B.B C.C D.D 5-Minute Check 1 Express the ratio as a fraction in simplest form. 10 tulips to 18 daffodils Express the ratio as a fraction.

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Over Lesson 6–1 A.A B.B C.C D.D 5-Minute Check 1 Express the ratio as a fraction in simplest form. 10 tulips to 18 daffodils Express the ratio as a fraction in simplest form. 400 cans to 5 boxes A school cafeteria has 16 tables and 144 chairs. Express the ratio of tables to chairs as a fraction in simplest form.

Splash Screen

Then/Now You have already learned how to write ratios. (Lesson 6–1) Find unit rates. Compare and use unit rates to solve problems.

Vocabulary rate unit rate A comparison of two measurements having different units (examples:, ) A rate that is simplified so that it has a denominator of 1 (examples:, )

Example 1 Find Unit Rates A. Express $10 for 8 cans of soup as a unit rate. Round to the nearest tenth, if necessary. ÷8 Divide the numerator and denominator by 8. Answer: The cost per can is $1.25.

Example 1 Find Unit Rates B. Express 187 miles in 7 days as a unit rate. Round to the nearest tenth, if necessary. ÷7 Divide the numerator and denominator by 7. Answer: 26.7 miles per day

A.A B.B C.C D.D Example 1 A.$3.11 per gallon B.3.11 gallons per dollar C.$3.22 per gallon D.3.22 gallons per dollar A. Express $38.64 for 12 gallons of gasoline as a unit rate.

A.A B.B C.C D.D Example 1 A.23 hours per mile B.23 miles per hour C.44 hours per mile D.44 miles per hour B. Express 220 miles in 5 hours as a unit rate.

Example 2 Compare Unit Rates SHOPPING A 12-oz bottle of cleaner costs $4.50. A 16-oz bottle of cleaner costs $6.56. Which costs less per ounce? Find and compare the unit rates of the bottles. For the 12-oz bottle, the unit rate is $0.38 per ounce. ÷12 Divide the numerator and denominator by 12 to get a denominator of 1. ≈

Example 2 Compare Unit Rates Divide the numerator and denominator by 16 to get a denominator of 1. For the 16-oz bottle, the unit rate is $0.41 per ounce. Answer: The 12-oz bottle has the lower cost per ounce. ÷16

A.A B.B C.C D.D Example 2 A.The 12-pack costs less per can. B.The 6-pack costs less per can. C.Both packs cost the same per can. D.Cannot be determined from the given information. SHOPPING A 6-pack of a soft drink costs $1.50. A 12-pack of a soft drink costs $2.76. Which pack costs less per can?

Example 3 Use Unit Rates ANIMALS A snail moved 5 feet in 2 hours. How many feet will the snail move in 5 hours? Step 1 Find the unit rate.

Example 3 Use Unit Rates Step 2 Multiply this unit rate by 5 to find the number of feet a snail will move in 5 hours Divide out common units Answer: A snail will move 12.5 ft in 5 hours.

A.A B.B C.C D.D Example 3 JOGGING Dave jogs 2 miles in 22 minutes. How many feet per second is this? A. B. C. D.

End of the Lesson