The ratio of the present ages of Ram and Ramesh is 3 : 5. After 7 years the ratio of their ages will be 4 : 5. Find the present age of Ramesh.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 7 years.
Let the present ages of Ram and Ramesh be 3x and 5x
According to the question;
⇒ (3x + 7)/(5x + 7) = 4/5
⇒ 5(3x + 7) = 4(5x + 7)
⇒ 15x + 35 = 20x + 28
⇒ 5x = 7
⇒ x = 7/5
Present age of Ramesh = 5x = 5 × 7/5 = 7 years