1.

The ratio of the age of Ravi and Rahim 10 years ago was 1 : 3. The ratio of their age five years hence will be 2 : 3. Then the ratio of their present age will be.1. 1 : 32. 2 : 33. 3 : 54. 3 : 2

Answer» Correct Answer - Option 3 : 3 : 5

Given: 

The ratio of the age of Ravi and Rahim 10 years ago was 1 : 3. The ratio of their age five years hence will be 2 : 3. 

Concept used:

Ratio and proportion 

Calculation:

Let the age of Ravi and Rahim 10 years ago be x and 3x years.

After 5 years from now,

⇒ \(\frac{{x + 15}}{{3x + 15}} = \frac{2}{3}\)

⇒ 3x + 45 = 6x + 30

⇒ 3x = 15

⇒ x = 5

The ratio of their present age 

⇒ \(\frac{{x + 10}}{{3x + 10}}\)

⇒ 15 : 25

∴ 3 : 5 will be their present age.



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