Subject: General Aptitude · Chapter: Problems on Ages · Exam: 2010 · Marks: · Difficulty:
The ratio of the ages of Tina and Rakesh is 9 : 10 respectively. Ten years ago, the ratio of their ages was 4 : 5 respectively. What is the present age of Rakesh?
Answer
Answer (as printed):
Explanation
Let Tina’s age be 9x years. Then, Rakesh’s age = 10x years. 9 x – 10 4 ∴ = ⇒ 5 (9x – 10) = 4(10x – 10) ⇒ 45x – 40x = 50 – 40 ⇒ 5x = 10 ⇒ x = 2. 10 x – 10 5 ∴ Present age of Rakesh = (10 × 2) years = 20 years.
Explanation as extracted from the printed page; notation may be imperfect.