The average age of 3 girls is 24 years and their ages are in the proportion of 7 : 8 : 9. What is the age of the eldest girl?
Answer & explanation
Correct answer: option 4
Sum of ages of 3 girls = 3 × 24 = 72 years
Ratio of their ages = 7 : 8 : 9
ATQ,
24R = 72 years
1R = 3 years
Ages of Eldest girl = 9 × 3 = 27 years