The histogram shows the marks scored by 40 students in a test with a maximum of 30 marks.
What is the ratio of the number of students who scored marks in the class intervals 10 - 15 and 15 - 20 taken together to that of the students in the class intervals 5 - 10 and 25 - 30 taken together?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 15:13
According to the question
The required ratio = (7 + 8): (8 + 5)
= 15:13