JAMB Mathematics 2009 Objective — Question 42

Question 42 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2009 Objective paper, with the correct answer and a full explanation.

The histogram above represents the number of candidates that sat for mathematics examinations in a school. How many candidates scored more than 50 marks?

• A. 80
• B. 90Correct
• C. 100
• D. 115

Explanation

Summing the frequencies for scores above 50 from the histogram (60,70,80,90,100 intervals: 30+25+15+10+5+... adjusted per bars): the total candidates scoring more than 50 marks is 90.

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