JAMB - Mathematics (2012 - No. 45)
The bar chart above shows the distribution of marks in a class test. If the pass mark is 5, what percentage of students failed the test?
10%
20%
50%
60%
Explanation
Number that score less than 5: 5 + 6 + 4 + 3 + 2 = 20
Total number of students: 5 + 6 + 4 + 3 + 2 + 4 + 6 + 5 + 1 + 3 + 1 = 40.
%age of students that failed: \(\frac{20}{40} \times 100% = 50%\)
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