NUMBER SENSE (RATIO, PROPORTION & PERCENT)

Nena bought some books and notebooks during a sale. The ratio of the number of books to the number of notebooks is 7 : 9. Which of the following models illustrates this situation?

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In a class, the number of girls is 11/30 of the total number of pupils. What is the ratio of the number of boys to the number of girls in the class?

• 11 : 19

• 11 : 30

• 19 : 11

• 30 : 19

Jun ran a distance that is 11/8 of the distance John ran. Which of the following CANNOT be answered by the given information?

• The ratio of the distance John ran to the distance Jun ran

• The distance Jun ran as a fraction of the total distance the two boys ran

• The ratio of the total distance the two boys ran to the distance John ran

• The actual distance that each boy ran

Which of the following statements is TRUE?

• In a proportion, the quantities can be written in any order.

• When the ratios of two quantities are different, the two quantities are in the same proportion

• A proportion is a statement that two ratios are equivalent

• When the ratios of two quantities are the same, the two quantities are not in proportion.

Which statement represents the following model?

• 12 : 6 = 2 : 1

• 12 : 6 = 2 : 1

• 4 : 8 = 6 : 12

• 12 : 6 = 4 : 2

In two games, the number of points scored by a basketball player for every number of shots he took were in the same proportion. Which of the following does NOT show the correct proportion?

• 12 : 14 = 6 : 7

• 12 : 21 = 18 : 14

• 6 : 7 = 18 : 21

• 12 : 14 = 18 : 21

The ratio of ampalaya to squash is 2:6. If there are 24 vegetables, how many are squash?

• 10

• 12

• 18

• 20

There are 30 insects in a garden. The ratio of butterflies to dragonflies is 3:2. How many butterflies are there?

• 15

• 18

• 21

• 24

What is 5% of 12?

• 60

• 0.6

• 0.7

• 0.8

Fifteen percent of 45 is what number?

• 6.70

• 6.73

• 6.74

• 6.75