Ratios Study Guide

Last month, Eddie ate 9 apples, 5 bananas, 4 peaches, and 7 oranges.

What is the ratio of bananas to oranges?

• 9 : 5

• 5 : 4

• 9 : 7

• 5 : 7

A pet store sold 10 birds, 14 dogs, and 8 cats last week.

What is the ratio of cats to pets sold last week?

• 8 : 24

• 8 : 32

• 8 : 10

• 8 : 14

Ms. Graves has 3 pennies and 9 dimes in her piggy bank.

What is the ratio of dimes to total coins in her piggy bank?

• 3 : 9

• 9 : 3

• 3 : 12

• 9 : 12

Determine which pair of ratios or rates are equivalent.

• $3.00 for 8 cookies; $12.00 for 24 cookies

• $3.00 for 8 cookies; $12.00 for 16 cookies

• $3.00 for 8 cookies; $9.00 for 24 cookies

• $3.00 for 8 cookies; $9.00 for 16 cookies

Determine which pair of ratios or rates are equivalent.

• 30 oz costs $4; 120 oz costs $12

• 30 oz costs $4; 120 oz costs $16

• 30 oz costs $4; 60 oz costs $12

• 30 oz costs $4; 60 oz costs $16

Out of 20 people surveyed at the mall, 5 have a bicycle. Based on these results, of the 880 people at the mall, how many have a bicycle? 

• 44

• 100

• 220

• 440

The ratio of juniors to seniors on the track team is 5 to 6. How many juniors are on the track team if there are 18 seniors on the team?

• 12

• 15

• 16

• 17

The ratio of the number of text messages sent by Lucas to the number of text messages sent by his sister is 3 to 4. Lucas sent 18 text messages.

How many text messages did his sister send?

• 4

• 6

• 24

• 72

There are 810 Calories in 3 scoops of vanilla ice cream. How many Calories are there in 6 scoops of vanilla ice cream?

• 1,620

• 816

• 9

• 3

Larry made 3 free throws out of 7 attempts, and

Karl made 9 free throws out of 14 attempts.

Are these ratios equivalent?

• Yes, because 7 times 2 equals 14.

• Yes, because both parts of the first ratio were multiplied by the same number.

• No, because

  3 + 7 = 10 and

  9 + 14 = 23, and those sums are not the same.

• No because 3 times 3 equals 9, but 7 times 2 equals 14; therefore both parts were not multiplied by the same number.