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Marks

number of students

1 - 20

10

20 - 40

40

40 - 60

15

60 - 80

12

80 - 100

30

What is the ratio of the number of student between 20-40 and 80-100 marks?

A4 ∶ 3

B5 ∶ 3

C3 ∶ 5

D3 ∶ 4

Answer:

A. 4 ∶ 3

Read Explanation:

Number of students getting marks between 20-40 marks = 40 Number of students getting marks between 80-100 marks = 30 Required ratio = 40 ∶ 30 = 4 ∶ 3


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