Equivalent Ratios

Henry is reading a book. The ratio of the number of pages he read to the pages he has yet to read is 7 : 3. If has read 28 pages already, how many pages are left for him to read?

• 9 pages are left

• 10pages are left

• 11 are left

• 12 pages are left

The ratio of lemon juice to water in Ella's Delicious Lemonade is 3 cups : 5 cups. She wants to make a triple batch. What ratio of lemon juice and water should she use?

• 9 cups juice : 15 cups water

• 6 cups juice : 10 cups water

• 3 cups juice : 15 cups water

• 9 cups juice : 5 cups water

There are 10 boys in the sixth grade. The number of girls in the sixth grade is 12. Lonnie says that means the ratio of the number of boys in the sixth grade to the number of girls in the sixth grade is 5: 6. Is Lonnie correct?

• Yes, because 10:12 is equivalent to 5:6

• No, because they are not equivalent