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?
- A.
35% - B.
45% - C.
50% - D.
60%
Correct Answer: Option C
Explanation
% of those above 15 but less than 21 years
age = ^{25}/_{50} x ^{100}/_{1}
= 50%