2.2 Review Worksheet, Part 1

2.2.1 Rates, Ratios, and Proportions 1. The ratio of the height of a bonsai ficus tree to the height of a full-size ficus tree is 1:9. The bonsai ficus is 6 inches tall. What is the height of a full-size ficus?

2. At one factory, the ratio of defective light bulbs produced to total light bulbs produced is about 3:500. How many light bulbs are expected to be defective when 12,000 are produced?

Find each unit rate.

3. Four gallons of gasoline weigh 25 pounds.

4. Fifteen ounces of gold cost $6058.50.

5. The tropical giant bamboo can grow 11.9 feet in 3 days. What is this rate of growth in inches per hour? Round your answer to the nearest hundredth, and show that your answer is reasonable.

6. The maximum speed of the Tupolev Tu-144 airliner is 694 m/s. What is this speed in kilometers per hour?

Solve each proportion. 7.

v 6

+ b

1 2

2 5

4

3 10

7

= h 2 5 6 −

8.

9.

10.

=

= y

=

20

x 8

t 5 9

7.5 20

1 2

2 3

6

= k 3 45 18

11.

12.

13.

14.

=

=

=

− q

4

= − n 38 19 20

= 3 5 100 x

5

= a 6 15 17

9 2

5

15.

16.

17.

18.

=

+ x

1

138

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