Practice Test for Chapter 4 Ratios and Proportions. a. A is a comparison of two quantities that have different units.
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1 439 Name Date Practice Test for Chapter 4 Ratios and Proportions 1. Use rate or ratio to complete the following statement: a. A is a comparison of two quantities that have different units. Not required for this problem. Answer 1a: b. A is a comparison of two quantities, often written in fraction form. Answer 1b: 2. Write 25 : 75 as a ratio in the simplest form. Express your answer as a fraction. Answer 2: 3. Write as a unit rate: 475 students for every 25 teachers Answer 3: 4. Write as a unit rate: $2.95 per 2.5 ounces Answer 4:
2 440 Foundations of Mathematics 5. Write as a unit rate: $3,692 paid for 208 shares of stock Answer 5: 6. Determine if the proportion is true or false. Not required for this problem = Answer 6:
3 Practice Test for Chapter 4 Ratios and Proportions Solve the proportion. Round the answer to the nearest tenth. n 7 = Answer 7: 8. Calculate the unit rate. Round to the nearest tenth. If we used 24 gallons of gas to drive 614 miles, how many miles per gallons did we get? Answer 8:
4 442 Foundations of Mathematics 9. Write as a fraction reduced to lowest terms. In a class of 36 students, 30 students passed the last test. What is the ratio of those who passed to those who did not pass? Answer 9: 10. Solve the problem by using a proportion. Tom hiked 60 miles in 3 days. At this rate, how far could he hike in 6 days? Answer 10: 11. Write as a unit rate. Round to the nearest hundredth. 26 miles per 3.6 gallons Answer 11:
5 Practice Test for Chapter 4 Ratios and Proportions Write as a unit rate. Round to the nearest hundredth. 284 words typed in 14 minutes Answer 12: 13. Determine if the proportion is true or false. Not required for this problem = Answer 13: 14. Solve the proportion = 02. n Answer 14:
6 444 Foundations of Mathematics 15. Solve the proportion. Do no round the answer. n 14 = Answer 15: 16. Calculate the unit rate. Round to the nearest tenth. If it took 18 hours to drive 1094 miles, how many miles per hour did we average? Answer 16: 17. Solve the problem by using a proportion. Do no round the answer. If a distance of 300 miles is represented on a map by 9 inches, how many inches are needed to represent 440 miles? Answer 17:
7 Practice Test for Chapter 4 Ratios and Proportions Solve the problem by using a proportion. Round the answer to the nearest tenth. On a certain day, a 6 foot tall man cast a shadow 5½ feet long. At the same time, a building cast a shadow 100 feet long. How tall is the building? Answer 18: 19. Solve the problem by using a proportion. Tina is writing a book on birds. In 4 weeks, she wrote 2½ chapters. At this rate, how long will it take her to write the entire book, if she plans to have 20 chapters? Answer 19:
8 446 Foundations of Mathematics 20. Solve the problem by using a proportion. A survey of 100 customers revealed that 20 preferred Surfsuds laundry detergent over any other brand. If a grocery store anticipates 640 of its customers to purchase laundry detergent, how many of them would be expected to buy the Surfsuds brand? Answer 20:
DO NOT WRITE RATIOS AS MIXED NUMBERS. NOTE THAT THE ORDER MATTERS.
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