Quiz on Ratios and Proportions

What is a ratio?

• A comparison of two quantities.

• A fraction.

• A decimal.

• A percentage.

What is a proportion?

• An equation stating that two ratios are equal.

• A fraction.

• A decimal.

• A percentage.

What is direct proportion?

• As one quantity increases, the other increases proportionally.

• As one quantity decreases, the other increases.

• As one quantity increases, the other decreases.

• As one quantity decreases, the other decreases proportionally.

What is inverse proportion?

• As one quantity increases, the other decreases.

• As one quantity decreases, the other increases.

• As one quantity increases, the other increases proportionally.

• As one quantity decreases, the other decreases proportionally.

Simplify the ratio 12:18.

• 2:3

• 3:2

• 4:6

• 6:4

Are the ratios 3:4 and 9:12 equivalent?

• Yes

• No

If 4 pencils cost Php 20, how much will 8 pencils cost?

• Php 40

• Php 10

• Php 20

• Php 30

If 6 workers can finish a job in 10 days, how many days will it take 10 workers to finish the same job?

• 4 days

• 5 days

• 6 days

• 7 days

The ratio of boys to girls in a class is 3:2. If there are 15 boys, how many girls are there?

• 10

• 5

• 15

• 20

A car travels 120 km in 2 hours. How far can it travel in 5 hours at the same speed?

• 300 km

• 240 km

• 360 km

• 420 km