Solving Ratio Problems

The ratio of the length of a shorter walkway to the length of a longer walkway is 4 to 7. The length of the longer walkway is 21 meters. What is the length of the longer walkway?

• 15 m

• 12 m

• 3 m

• 9 m

Tim has a collection of model cars and boats. He has 6 cars for every 4 boats. He has a total of 16 boats. How many cars are in Tim’s collection?

• 24

• 16

• 32

• 20

The cost of 6 apples is $3.50. How much is the cost of 18 apples?

• $10.5

• $30

• $21

• $20

Manny can type 28 words in 4 minutes. How many words he can type for have 20 minutes?

• 100

• 140

• 120

• 160

The ratio of length to width of a rectangle is 3: 5.  If the width is 35 meters, how long is the rectangle?

• 25 m

• 18 m

• 21

• 16 m

At a middle school, 3 out of every 10 students ride a bus to school. There are 600 students at the school. How many students ride a bus to school?

• 180

• 160

• 150

• 300

In a basket, the ratio of apples to orange is 5 : 2. If there are 21 fruits altogether, how many apples are there?

• 12

• 15

• 10

• 16

In a middle school Math team, 2 out of every 5 members is a 6^th grade students. If there are 25 members, how many 6^th graders are there in a Math team?

• 12

• 15

• 10

• 16

In a box, 3 out of every 7 marbles are blue. If there are 28 marbles altogether, how many blue marbles are there?

• 10

• 8

• 12

• 9

The ratio of girls to boys in a class is 2 to 3. There are 16 girls in the class. How many students are in the class?

• 16

• 18

• 40

• 20