Rates & Proportional Relationships

The ratio of cats to dogs seen by a veterinarian in one day is 2 to 5. If a vet saw 40 dogs in one day, how many cats did he see?

• 5

• 16

• 29

• 40

At a sports camp, there is one counselor for every 12 campers. If there are 156 campers attending the camp, which equivalent ratios could be used to find the number of counselors?

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A baker is making an oversized sheet cake for a school dance. The recipe calls for 2 cups of sugar for every 3 cups of flour. How many cups of flour are needed, if she is using 18 cups of sugar?

• 27 cups

• 18 cups

• 9 cups

• 6 cups

Which rate gives the best price for scrapbook paper?

• 10 Sheets:$2.00

• 6 Sheets:$0.60

• 5 Sheets:$1.00

• 3 Sheets:$0.60

 $\frac{5}{7}$  
Which of the following ratios is equivalent to 5/7 ?

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A school population was predicted to increase by 50 students a year for the next 10 years. If the current population is 700 students, what will be the enrollment after 10 years?

• 50 Students

• 500 Students

• 1,200 Students

• 7,000 Students

The table shows the cost of different kinds of fruit. To the nearest cent, what is the cost of 3.5 pounds of grapes?

• $2.84

• $2.88

• $3.50

• $3.63

The bar graph below shows the average number of visitors to different Web sites during one month.

How many visitors can Web site B expect to have in one year?

• 2.4 million

• 24 million

• 240 million

• 2,400 million

The table shows the cups of whole wheat flour required to make dog biscuits. How many cups of whole wheat flour are required to make 35 biscuits? (Scale down to find the unit rate & it's easy!)

 $Set\ up\ your\ ratio:$   $\frac{30}{90}=\frac{120}{?}$  

Diana's sixth-grade class sorted books in the library. The class sorted 30 books in 90 minutes. Write an equivalent ratio to find how long it would take to sort 120 books.

• 180 minutes

• 90 minutes

• 160 minutes

• 360 minutes