Ratio and Rate Reasoning

12 pencils can be purchased with $3. How many pencils can be purchased with $4.50?

The table shows the relationship of pink lemonade sold to regular lemonade.

Use the table to determine how many cups of regular lemonade are sold when 14 cups of pink lemonade are sold.

• 35

• 4

• 49

• 34

If 7 sheets of scrapbook paper cost $1.05, which option has a BETTER unit price per sheet?

• 10 sheets for $2.00

• 6 sheets for $0.60

• 5 sheets for $1.00

• 3 sheets for $0.90

Anna earns $48 for washing cars for 6 hours. If Anna charges at the same rate, how many hours will it take her to earn $72?

• 8

• 9

• 24

• 12

Two quantities are in the ratio 7:3. If the sum of the quantities is 100, what is the larger quantity?

• 70

• 75

• 30

• 25

In Houston, Texas 6 birds ate 30 grams of worms in one night. At this rate, how many grams of worms could 98 birds eat in one night?

• 490

• 19.6

• 134

• 580

A recipe calls for 2 cups of flour for every 3 cups of sugar. If you want to make a half batch, how many cups of flour do you need?

• 1

• 1.5

• 2

• 3

Use ratio language to describe the relationship where for every 5 red marbles, there are 7 blue marbles.

• There are 5 red marbles for every 7 blue marbles.

• The ratio of red marbles to blue marbles is 5 to 7.

• Both A and B

• None of the above

A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him? (no label)

A school's student to teacher ratio is 20:1. If there are 400 students, how many teachers are there?

• 20

• 25

• 15

• 10