Correct Answer - Option 3 : 6.8
Given:
Percentage of voters between 18 to 21 years of age = 8%
Percentage of voters who voted between the age of 18 to 21 years = 85%
Calculation:
Let the number of persons eligible to vote be x
Number of eligible persons between 18 and 21 = 8% of x
Number of persons between 18 and 21 who voted = 85% of (8% of x)
⇒ ( 85/ 100) × ( 8/ 100) × x
⇒ (68/1000) × x
Required percentage = (68x/1000) × (1/x) × 100%
⇒ 6.8%
∴ The required percentage is 6.8%