### 6-2: TEKS Practice

• 1. An airplane on autopilot took 5 hours to travel 3,475 kilometers. What is the unit rate for kilometers per hour?

• 2. What is the unit rate for meters per second if a car travels 374 meters in 17 seconds?

• 3. In a week, 12 hens laid 48 eggs. What is the unit rate for eggs per hen?

• 4. A package of 5 pairs of insulated gloves costs \$29.45. What is the unit price of the pairs of gloves?

• 5. You want to buy some rice. A 7-ounce package costs \$2.59. A 12-ounce package costs \$4.56. An 18-ounce package costs \$6.30. Which package is the best buy?

• 6. Population density is the number of people per unit of area. The population density of a certain region is 60 people per square kilometer. If the region covers 23 square kilometers, what is the population of the region?

• 7. A store sells 12 cans of soup for \$15. How much would it cost you to buy 7 cans of soup?

• 8.

• a. What is the unit rate for miles per gallon if you travel 460 miles on 20 gallons of fuel?

• b. Describe another unit rate that you could find for this situation.

• c. Explain the meaning of that unit rate.

• 9. Writing During a thunderstorm yesterday, 600 millimeters of rain fell in 30 minutes.

• a. What is the unit rate for millimeters per minute?

• b. Describe a situation in which it would be useful to know this unit rate.

• c. Explain why the unit rate would be useful.

• 10. Error Analysis A contractor purchases 7 dozen pairs of padded work gloves for \$103.32. He incorrectly calculates the unit price at \$14.76 per pair for the expense report.

• a. What is the correct unit price?

• b. Why is the contractor's unit price incorrect?

• A. The contractor uses subtraction rather than division to find the unit price.

• B. The contractor uses multiplication rather than division to find the unit price.

• C. The contractor's unit price is per glove, not per pair of gloves.

• D. The contractor's unit price is per dozen pairs, not per pair of gloves.

• 11. Fundraising The track team needs new uniforms. The students plan to sell plush toy tigers (the school mascot) for \$5 each. The students find three companies online that sell stuffed mascots. Company A sells 12 tigers for \$33.24. Company B sells 16 tigers for \$44.80. Company C charges \$41.10 for 15 tigers. Which company has the best buy?

• 12. Reasoning A store sells a package of 25 trading cards for \$5.25.

• a. Explain how you can tell that the unit price per card is less than \$1.

• b. What is the unit price per card?

• 13. Estimation A car takes 55.3 seconds to travel 1 mile.

• a. How long does it take the car to travel 5.8 miles? Round to the nearest whole number to find the estimated answer.

• b. Find the exact answer.

• 14. Think About the Process At a little-known vacation spot, taxi fares are a bargain. A 36-mile taxi ride takes 42 minutes and costs \$25.20. You want to find the cost of a 47-mile taxi ride. What unit price do you need?

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