Explanation:

- Statement I tells us: The ratio of Arun's and Bhadra's current ages is 5:7. This means if we know one age, we can find the other.

- Statement II informs us that Bhadra was born 10 years before Arun. This gives a direct age difference between them.

- Statement III states: In 5 years, Arun's age will be three-fourths of Bhadra's age. This helps determine specific ages at a future point.

To find when Bhadra will be 50, we need to establish his current age. Using any two of the three statements:

- Statements I and II together: We can set up equations with the age ratio and age difference to find Bhadra’s current age.

- Statements II and III together: We can establish the age difference and future age relationship to solve for current ages.

- Statements I and III together: We can use ratio and future age condition, solving for current ages.

Given multiple ways to find Bhadra's age, the correct solution is:

Option 1: Any two of the three statements are sufficient to solve the problem.