Chapter 2 Quiz 3

Determine whether the pair of ratios are equivalent ratios.

5/7 and 20/28.

• Yes

• No

Determine whether the pair of ratios are equivalent ratios.

11/13 and 22/25

• Yes

• No

Determine whether the pair of ratios are equivalent ratios.

4.2/6.3 and 0.3/0.5

• Yes

• No

Solve each proportion. 3/4 and x/20.

• 5

• 10

• 15

Solve each proportion. 6/4 and x/18.

• 3

• 12

• 27

Solve each proportion. 33/x and 15/45.

• 3

• 11

• 66

• 99

State whether the percent of change is a percent of increase or a percent of decrease. Then find the percent of change. original: 25 new: 18

• decrease; 28%

• increase; 25%

• increase; 28%

• decrease; 25%

State whether the percent of change is a percent of increase or a percent of decrease. Then find the percent of change. original: 36 new: 45

• decrease; 28%

• increase; 25%

• increase; 28%

• decrease; 25%

The cost of a compact disc is $18. If the sales tax is 6%, find the total price.

• $19.06

• $18.06

• $19.14

• $19.08

A store sells a certain digital camera model for $108. During a special promotion, the camera is discounted by 30 percent. What is the discounted price?

• $32.40

• $75.60

• $78.00

• $140.40