Ratio, Proportions, Percent

There are 12 boys and 13 girls in the school science club. What is the ratio of number of girls to number of boys?

• 13 : 12

• 12 : 13

• 25 : 13

• 13 : 25

There are 21 boys and 30 girls in the school band. Find the ratio for number of boys in the band to the total number of students in the band.

• 21 : 51

• 21 : 30

• 51 : 21

• 30 : 21

Are the ratios 30/45 and 14/27 equivalent?

• No

• Yes

Write the ratio as a fraction in simplest form.
15 girls to 6 boys   

• 5 to 2
• 5/3
• 3 to 5
• 5/2

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Solve the proportion.

• n=6
• n=24
• n=7
• n=8

Solve the proportion.

• q=2
• q=9
• q=4.5
• q=6

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35
• 60
• 18
• 50

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