The table above shows the frequency distribution of the ages (in years) of pupils in a certain secondary school. What percentage of the total number of pupils is over 15 years but less than 21 years?
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Correct Answer: Option C
Explanation:
% of those above 15 but less than 21 years
age = 25/50 x 100/1
= 50%
% of those above 15 but less than 21 years
age = 25/50 x 100/1
= 50%