Question

The present ages of Sony and Moni is 5 : 4. This ratio was 4 : 3 10 years ago, then what will be the age of Sony after 5 years?
1. 45 years
2. 50 years
3. 40 years
4. 55 years

Answer 1

Correct Answer - Option 4 : 55 years

Given:

Present ages of Sony and Moni = 5 : 4,

This ratio was 4 : 3 10 years ago

Calculation:

Let the proportional age ratio be x then

According to the question;

(5x - 10)/(4x - 10) = 4/3

⇒ 15x - 30 = 16x - 40

⇒ x = 10

Sony present age = 5 × 10 = 50 years

After 5 years age will be = 50 + 5 = 55 years

∴ The age of Sony after 5 years will be 55.