Welcome to the **Ratio and Proportion MCQs with Answers**. In this post, we have shared **Ratio and Proportion Online Test** for different competitive exams. Each question in Aptitude Test offers a chance to enhance your knowledge regarding **Ratio and Proportion** MCQs.

If the ratio of boys to girls in a class is 3:4 and there are 21 boys, how many girls are there?

a) 24

b) 28

c) 30

d) 35

The ratio of the ages of two siblings is 5:7. If the younger sibling is 10 years old, how old is the older sibling?

a) 12

b) 14

c) 16

d) 18

In a recipe, the ratio of flour to sugar is 4:3. If there is 12 cups of flour, how much sugar is needed?

a) 9 cups

b) 8 cups

c) 6 cups

d) 5 cups

If 3 apples cost $6, how much would 8 apples cost at the same rate?

a) $12

b) $15

c) $18

d) $20

The ratio of the length to the width of a rectangle is 7:5. If the width is 10 cm, what is the length?

a) 14 cm

b) 15 cm

c) 18 cm

d) 20 cm

A map has a scale of 1:50,000. If the distance between two cities on the map is 4 cm, what is the actual distance between the cities?

a) 200 km

b) 400 km

c) 800 km

d) 1,000 km

In a class of 40 students, the ratio of boys to girls is 3:5. How many boys are in the class?

a) 15

b) 16

c) 18

d) 20

The ratio of two numbers is 7:9. If their sum is 64, what is the larger number?

a) 36

b) 39

c) 42

d) 45

A car travels 180 km in 3 hours. What is the car’s speed in km/h?

a) 50 km/h

b) 55 km/h

c) 60 km/h

d) 65 km/h

If the ratio of the angles in a triangle is 2:3:4, what is the measure of the largest angle?

a) 50 degrees

b) 60 degrees

c) 70 degrees

d) 80 degrees

The ratio of the number of red balls to blue balls in a box is 4:5. If there are 45 blue balls, how many red balls are there?

a) 35

b) 36

c) 40

d) 44

If the ratio of boys to girls in a group is 5:8 and there are 52 girls, how many boys are there?

a) 30

b) 32

c) 35

d) 40

In a ratio of 2:5, if the total number of parts is 56, what is the value of each part?

a) 8

b) 10

c) 12

d) 14

The ratio of cats to dogs in a shelter is 3:4. If there are 84 animals in total, how many are cats?

a) 36

b) 40

c) 42

d) 48

If the ratio of the length to the width of a rectangle is 5:2 and the width is 8 cm, what is the length?

a) 20 cm

b) 25 cm

c) 30 cm

d) 40 cm

In a recipe, the ratio of oil to vinegar is 3:1. If you use 12 tablespoons of oil, how many tablespoons of vinegar are used?

a) 3

b) 4

c) 6

d) 9

The ratio of the number of apples to oranges is 7:3. If there are 280 fruits in total, how many oranges are there?

a) 84

b) 90

c) 96

d) 105

If the ratio of the circumference to the diameter of a circle is 22:7, what is the circumference if the diameter is 14 cm?

a) 44 cm

b) 46 cm

c) 48 cm

d) 50 cm

The ratio of the number of men to women in a company is 5:6. If there are 55 women, how many men are there?

a) 45

b) 50

c) 52

d) 60

In a class, the ratio of the number of students who passed to those who failed is 4:1. If 40 students failed, how many passed?

a) 120

b) 130

c) 140

d) 150

If a car travels 150 km in 2.5 hours, what is its speed in km/h?

a) 55 km/h

b) 60 km/h

c) 65 km/h

d) 70 km/h

The ratio of boys to girls in a school is 3:2. If there are 90 boys, how many girls are there?

a) 45

b) 50

c) 60

d) 75

A recipe calls for a ratio of 2 parts flour to 3 parts sugar. If you use 10 cups of flour, how much sugar is needed?

a) 12 cups

b) 15 cups

c) 20 cups

d) 25 cups

If the ratio of the ages of two friends is 4:5 and their total age is 45 years, what is the age of the older friend?

a) 24 years

b) 25 years

c) 27 years

d) 30 years

In a bag of 45 balls, the ratio of red to blue balls is 2:3. How many red balls are there?

a) 18

b) 20

c) 22

d) 24

The ratio of the number of students in two classes is 3:4. If there are 21 students in the first class, how many students are there in the second class?

a) 24

b) 28

c) 30

d) 35

A mixture contains milk and water in the ratio 5:3. If there are 32 liters of milk, how many liters of water are there?

a) 15 liters

b) 18 liters

c) 20 liters

d) 24 liters

The ratio of the speeds of two cars is 3:4. If the first car travels at 60 km/h, what is the speed of the second car?

a) 70 km/h

b) 80 km/h

c) 90 km/h

d) 100 km/h

The ratio of the lengths of two pieces of wood is 7:5. If the shorter piece is 20 cm long, what is the length of the longer piece?

a) 28 cm

b) 30 cm

c) 32 cm

d) 35 cm

In a group of 75 students, the ratio of boys to girls is 4:5. How many boys are there?

a) 30

b) 32

c) 40

d) 45

If the ratio of the length to the width of a rectangular garden is 9:4 and the length is 36 meters, what is the width?

a) 12 meters

b) 14 meters

c) 16 meters

d) 20 meters

A recipe requires flour and sugar in the ratio 7:2. If you use 28 cups of flour, how many cups of sugar are needed?

a) 6

b) 8

c) 10

d) 12

The ratio of cats to dogs in a shelter is 3:7. If there are 56 animals in total, how many cats are there?

a) 24

b) 25

c) 28

d) 30

If a car’s speed is in the ratio of 4:5 to another car’s speed and the second car is traveling at 100 km/h, what is the speed of the first car?

a) 80 km/h

b) 90 km/h

c) 95 km/h

d) 120 km/h

In a class, the ratio of the number of boys to girls is 7:8. If there are 56 girls, how many boys are there?

a) 49

b) 50

c) 51

d) 53

The ratio of the cost of two items is 5:6. If the cost of the first item is $25, what is the cost of the second item?

a) $30

b) $35

c) $40

d) $45

If a student scored 72 out of 80 in a test, what is the ratio of the score to the total marks?

a) 3:4

b) 4:5

c) 9:10

d) 6:7

The ratio of two numbers is 5:7. If their difference is 12, what is the smaller number?

a) 20

b) 25

c) 30

d) 35

In a group of 60 people, the ratio of men to women is 3:2. How many women are there?

a) 24

b) 25

c) 30

d) 36

If the ratio of the number of students in two classes is 4:5 and there are 36 students in the first class, how many students are in the second class?

a) 40

b) 45

c) 50

d) 55

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