The average age of 3 girls is 22 years and their ages are in a ratio o

1.	The average age of 3 girls is 22 years and their ages are in a ratio of 5 : 8 : 9. What are the ages of the youngest and the oldest girls?1. 15 years, 27 years2. 20 years, 36 years3. 10 years, 18 years4. 5 years, 9 years5. None of the above
Answer» Correct Answer - Option 1 : 15 years, 27 years Calculations: Total age of 3 girls = 3 × 22 ⇒ 66 Ratio of their ages = 5 : 8 : 9 ∴ Age of the youngest girl = 5/22 × 66 ⇒ 5 × 3 ⇒ 15 years ∴ Age of the oldest girl = 9/22 × 66 ⇒ 9 × 3 ⇒ 27 years The ages of the youngest and the oldest girls are 15 years and 27 years respectively.

The average age of 3 girls is 22 years and their ages are in a ratio of 5 : 8 : 9. What are the ages of the youngest and the oldest girls?1. 15 years, 27 years2. 20 years, 36 years3. 10 years, 18 years4. 5 years, 9 years5. None of the above

Answer» Correct Answer - Option 1 : 15 years, 27 years

Calculations:

Total age of 3 girls = 3 × 22

⇒ 66

Ratio of their ages = 5 : 8 : 9

∴ Age of the youngest girl = 5/22 × 66

⇒ 5 × 3

⇒ 15 years

∴ Age of the oldest girl = 9/22 × 66

⇒ 9 × 3

⇒ 27 years

The ages of the youngest and the oldest girls are 15 years and 27 years respectively.

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The average age of 3 girls is 22 years and their ages are in a ratio of 5 : 8 : 9. What are the ages of the youngest and the oldest girls?1. 15 years, 27 years2. 20 years, 36 years3. 10 years, 18 years4. 5 years, 9 years5. None of the above

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