1.

Age of Aman’s Sister and Aman are in ratio 5 : 7. If Age of Aman and his father is in ratio 1 : 2 and age of his father 3 years hence is 45. Find the Age of Aman’s sister.1. 15 years2. 18 years3. 20 years4. 22 years5. 10 years

Answer» Correct Answer - Option 1 : 15 years

Given:

Ratio of present age of Aman’s sister and Aman = 5 : 7

Ratio of present age of Aman and his father = 1 : 2

Calculation:

Present Age of his father = 45 – 3 = 42 years

So, present age of Aman = ½ × 42 = 21 years

As ratio of Aman’s sister and Aman = 5 : 7

⇒ so, age of Aman’s sister = 5/7 × 21 = 15 years


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