Rates Ratios and Proportions

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

Let's pretend there are 147 boys and 210 girls in the 6th grade at AMS.  If so, what is the ratio of girls to boys in the 6th grade at AMS.

• 147 to 210

• 210 to 147

• 21 to 30

• 63 to 147

If 5 candy bars cost $3.00, how much will 2 candy bars cost?

• $.40

• $.60

• $.80

You travel 150 miles on 5 gallons. How far did you travel per gallon?

• 15 miles

• 30 miles

• 3 miles

• 25 miles

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs.  Write and solve a proportion to find the number c of cats.

• c=15

• c=18

• c=21

• c=16

What is the unit rate if there are 92 miles driven using 4 gallons of gas?

• 21 miles per gallon

• 22 miles per gallon

• 23 miles per gallon

• 96 miles per gallon

Austin mowed 7 lawns in 4 hours. At that rate, how long will it take him to mow 21 lawns?

• 11 hours

• 12 hours 

• 21 hours

•  28 hours.

A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

• 2:5

• 5:3

• 3:5

• 5:2

Kelly has 10 apps on her iPad. 5 are school apps, 2 are music apps, and 3 are games. What is the ratio of music apps to all apps?

• 5 to 2

• 10:5

• 3:20

• 1 to 5

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7

• 7 to 5

• 5 to 12

• 7 to 12