PROPORTIONALITY PROBLEMS To see the answer, pass your mouse over the colored area. 11. Janet's car uses 9 gallons to go 200 miles. 1. a) How many gallons will she use to go 400 miles? 18 1. b) How many gallons will she use to go 600 miles? 27 1. c) How far can she drive with 36 gallons? 800 miles 12. Bertha went on a diet and lost 5 pounds in 2 weeks. How long will it 13. Carlos makes $25 in 4 hours. 3. a) How much will he make in 2 hours? $12.50 3. b) How much will he make in 20 hours? $125 3. c) How much will he make in 22 hours? $137.50 14. Carla makes $50 in 8 hours. 4. a) How much will she make in 4 hours? $25 4. b) How much will she make in 20 hours? $125 4. c) How much will she make in 36 hours? $225 15. 6 bottles cost $7.00. 5. a) How much will 18 bottles cost? $21 5. b) How much will 15 bottles cost? $17.50 5. c) How much will 27 bottles cost? $31.50 5. d) How many bottles can you buy with $10.50? 9 16. Which is a better value? 6. a) 15 ounces for $9.25, or 30 ounces for $18.00? 30 ounces for $18. 6. b) 15 ounces for $9.25, or 5 ounces for $3.29? 15 ounces for $9.25. 17. Which is a better value, 3 pounds for $7.00, or 10 pounds for $21.00? 10 pounds for $21. 18. The 18. a) how long will it take 8 workers to do that job? 3½ hours. 18. b) how long will it take 2 workers to do that job? 14 hours. 19. If 5 men can paint a house in 36 hours, 19.
a) how many men would be needed to paint the house in 12 19. b) how long would it take 1 man to paint the house? 180 hours. 10. The 10. a) 3600 pounds? 28 mph 10. b) 900 pounds? 112 mph 10. c) 1200 pounds? 84 mph Continue on to the next Lesson. or Return to the previous Lesson. Copyright © 2017 Lawrence Spector Questions or comments? E-mail: themathpage@yandex.com Private tutoring available. |