REVIEWER - Ratio and Proportion

What do you call a comparison of two or more quantities with similar units?

NOTE: Type your answer in all small letters.

Which of the following statements are correct?

(You may choose more than one options.)

• Two ratios are directly proportional when the first ratio is greater than the other ratio.

• Two ratios are proportioned if the given ratios are equal.

• Two ratios form a proportion if the product of the means and extremes are equal.

• Two ratios are inversely proportional when an increase in one quantity results in a decrease in another quantity or vice versa.

Which ratio doesn’t belong to the group?

• 9 : 36

• 8 : 24

• 12 : 36

• 10: 30

You must go to school for 10 months in a year. Express in ratio the number of months you need to be in school in a year.

• 5:6

• 10:1

• 1:10

• 6:5

What is the ratio of 90 minutes to an hour?

• 3:2

• 9:1

• 1:9

• 2:3

Luke has 5 dozens of eggs and 20 cups of flour. What is the ratio of eggs to cups of flour?

• 3:1

• 1:3

• 1:4

• 4:1

Which pair of ratios forms a proportion?

• 16:4 and 24:6

• 2:4 and 4:2

• 10:30 and 6:24

• 4:12 and 8:16

What is the value of n in 12 : 36 = n : 27 ?

• 9

• 8

• 7

• 6

A photocopier can print 45 pages in a minute. How many pages can it print for 3 minutes?

• 135 pages

• 90 pages

• 100 pages

• 150 pages

It takes 30 minutes for John to solve 20 word problems. How long will it take him to solve 10 word problems at the same rate?

• 15 minutes

• 60 minutes

• 30 minutes

• 45 minutes