Study the graph and answer the question that follows.
The number of patients aged 10 or more years but below 40 years is what per cent less than the number of patients aged 50 or more years but below 80 years?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 27.5
Solution
Age of person between 10 to 40 years = 14 + 20 + 24 = 58
Age of person between 50 to 80 years = 32 + 26 + 22 = 80
percentage = (80 – 58)/80 × 100
percentage = 22/80 × 100 = 27.5%