Page 453 - Basic College Mathematics with Early Integers

430 C HAPTE R 5 I RATIO, PROPORTION, AND MEASUREMENT

Write each rate as a fraction in simplest form.

11. 15 word processing pages printed in 6 minutes 12. 8 computers assembled in 6 hours

Write each rate as a unit rate.

13. 468 miles in 9 hours 14. 180 feet in 12 seconds

15. $27.84 for 4 CDs 16. 8 gallons of pesticide for 6 acres of crops

Find each unit price and decide which is the better buy. Round to 3 decimal places.Assume that we are comparing
different sizes of the same brand.

17. Taco sauce: 8 ounces for $0.99 or 12 ounces for $1.69 18. Peanut butter: 18 ounces for $1.49 or 28 ounces for
$2.39

(5.2) Write each sentence as a proportion.

19. 16 sandwiches is to 8 players as 2 sandwiches is to 20. 12 tires is to 3 cars as 4 tires is to 1 car.
1 player.

Determine whether each proportion is true.

21 14 3 60 3.75 7.5 3.1 0.8
21. = 22. = 23. = 24. =
8 6 5 100 3 6 6.2 0.16

Find the unknown number n in each proportion.

n -15 n 5 9 n 6 n
25. = 26. = 27. = 28. =
6 18 -9 3 2 3 5 3
2 2

1 1 Copyright 2012 Pearson Education, Inc.
2 3
0.4 2 7.2 6 n 10 n 9
29. = 30. = 31. = 32. =
n 4.7 n 0.3 1 2 2 1
4 8 4 9
2 5 7 3