### Ratio And Propertion mcq: Aptitude

The ratio of boys to girls in a class is 3 : 5. If there are 36 students in total , how many girls are there?

a) 12

b) 15

c) 20

d) 24

Answer: d) 24

If 2 pencils cost $ 0.60, what is the cost of 5 pencils?

a) $0.75

b) $1.00

c) $1.25

d) $1.50

Answer: c) $1.25

The ratio of the lengths of two sides of a rectangle is 3 : 5. If the shorter side has a length of 6 cm , what is the length of the longer side?

a) 9 cm

b) 12 cm

c) 15 cm

d) 18 cm

Answer: b) 12 cm

If the ratio of the areas of two similar triangles is 4 : 9, what is the ratio of their corresponding side lengths?

a) 1:2

b) 2:3

c) 3:4

d) 4:9

Answer: b) 2:3

The ratio of sugar to flour in a recipe is 2: 5 . If you need 4 cups of sugar how many cups , of flour do you need ?

a) 6

b) 8

c) 10

d) 12

Answer: c) 10

A car travels 240 miles in 4 hours . What is its averag e speed in miles per hour?

a) 30

b) 40

c) 50

d) 60

Answer: b) 60

In a fruit basket, the ratio of apples to oranges is 5 : 3. If there are 20 oranges, how many apples are there?

a) 10

b) 15

c) 25

d) 30

Answer: c) 25

The ratio of the ages of John and Mary is 3 : 2. If John is 24 years old , how old is Mary?

a) 12

b) 16

c) 18

d) 32

Answer: b) 16

A recipe calls for a ratio of 2 cups of milk to 3 cups of flour. If you have 6 cups of milk , how many cups of flour do you need?

a) 3

b) 4

c) 6

d) 9

Answer: d) 9

The scale on a map is 1 :25000. If the distance between two cities on the map is 5 cm , what is the actual distance between the cities in kilometers?

a) 5

b) 10

c) 12.5

d) 50

Answer: d) 50

The ratio of the angles in a triangle is 1: 2:3, What is the measure of the smallest angle ?

a) 30 degrees

b) 45 degrees

c) 60 degrees

d) 90 degrees

Answer: a) 30 degrees

A bag contains 8 red balls and 5 blue balls. If a ball is randomly selected , what is the probability of drawing a red ball?

a) 5/13

b) 8/13

c) 8/11

d) 5/8

Answer: b) 8/13

The ratio of the prices of two books is 3:4. If the first book costs $ 24, what is the cost of the second book?

a) $12

b) $16

c) $32

d) $48

Answer: c) $32

The ratio of the weights of two objects is 2 : 7. If the first object weighs 18 pounds, what is the weight of the second object?

a) 4 pounds

b) 9 pounds

c) 49 pounds

d) 63 pounds

Answer: d) 63 pounds

The ratio of boys to girls in a class is 2:5. If there are 28 students in total, how many boys are there?

a) 8

b) 10

c) 12

d) 16

Answer: b) 10

If 4 pens cost $1.20, what is the cost of 10 pens?

a) $0.30

b) $0.60

c) $1.00

d) $3.00

Answer: d) $3.00

The ratio of the lengths of two sides of a rectangle is 4 : 9. If the shorter side has a length , of 12 cm what is the length of the longer side ?

a) 18 cm

b) 24 cm

c) 27 cm

d) 36 cm

Answer: c) 27 cm

If the ratio of the areas of two similar triangles is 9 :16, what is the ratio of their corresponding side lengths?

a) 3:4

b) 4:3

c) 3:2

d) 2:3

Answer: a) 3:4

The ratio of sugar to flour in a recipe is 1: 4. If you need 3 cups of flour, how many cups of sugar do you need?

a) 1

b) 2

c) 3

d) 4

Answer: a) 1

A car travels 180 miles in 3 hours. What is its average speed in miles per hour?

a) 30

b) 40

c) 50

d) 60

Answer: c) 60

In a fruit basket, the ratio of apples to oranges is 3 :5. If there are 40 oranges, how many apples are there?

a) 12

b) 15

c) 24

d) 30

Answer: c) 24

The ratio of the ages of John and Mary is 2:5. If Mary is 35 years old, how old is John?

a) 10

b) 14

c) 20

d) 25

Answer: b) 14

A recipe calls for a ratio of 1 cup of milk to 4 cups of flour . If you have 2 cups of milk , how many cups of flour do you need?

a) 1

b) 2

c) 4

d) 8

Answer: c) 4

The scale on a map is 1: 50000. If the distance between two cities on the map is 8 cm, what is the actual distance between the cities in kilometers?

a) 4

b) 16

c) 40

d) 80

Answer: c) 40

The ratio of the angles in a triangle is 2:3:4. What is the measure of the smallest angle?

a) 30 degrees

b) 45 degrees

c) 60 degrees

d) 90 degrees

Answer: a) 30 degrees

A bag contains 6 red balls and 3 blue balls. If a ball is randomly selected, what is the probability of drawing a blue ball?

a) 1/3

b) 1/4

c) 1/2

d) 2/3

Answer: b) 1/4

The ratio of the prices of two books is 5:7. If the first book costs $35, what is the cost of the second book?

a) $25

b) $49

c) $50

d) $70

Answer: d) $70

The ratio of the weights of two objects is 3 : 8 . If the first object weighs 24 pounds , what is the weight of the second object?

a) 8 pounds

b) 18 pounds

c) 48 pounds

d) 64 pounds

Answer: d) 64 pounds

The ratio of boys to girls in a class is 5 :7. If there are 84 students in total , how many boys are there?

a) 20

b) 30

c) 40

d) 50

Answer: c) 40

If 5 calculators cost $100, what is the cost of 12 calculators?

a) $120

b) $240

c) $500

d) $1,200

Answer: b) $240