Understanding Ratios and Percentages

The video tutorial introduces the concept of ratios, explaining how they compare two quantities of the same kind by division. It provides examples using kites and balloons, puppies and dogs, and a story problem involving cows and hens. The tutorial also covers how to express ratios as percentages, emphasizing the importance of reducing ratios to their lowest terms.

What is a ratio used for in mathematics?

• To add two quantities

• To compare two quantities of the same kind by division

• To subtract two quantities

• To multiply two quantities

How is the ratio of 5 kites to 7 balloons written?

• 7:5

• 5:7

• 5-7

• 7-5

In the ratio 5:7, what is the first term?

• 2

• 12

• 5

• 7

How can the ratio of 13 puppies to 4 dogs be expressed?

• 13:4

• 4-13

• 13-4

• 4:13

What is the simplified form of the ratio 18 hens to 10 cows?

• 5:9

• 10:18

• 9:5

• 18:10

What is the ratio of cows to the total number of animals if there are 10 cows and 28 animals in total?

• 10:28

• 28:10

• 5:14

• 14:5

How is the ratio 35:100 expressed as a percentage?

• 35%

• 70%

• 50%

• 100%

If the ratio of raw mangoes to ripe mangoes is 15:100, what is the percentage of raw mangoes?

• 100%

• 50%

• 15%

• 85%

What is the first step in converting a ratio to a percentage?

• Subtract 100 from the ratio

• Multiply by 100

• Write it as a fraction

• Add 100 to the ratio

What is the percentage form of the ratio 15:100?

• 15%

• 100%

• 85%

• 50%