Statement I refers to the police catching house breakers, and Statement II refers to the citizens’ action of starting a night vigil.
Both actions are likely the result of a common concern for safety or increasing crime in the locality. The rise in crime or insecurity might be the underlying cause of both actions.
Therefore, both statements are effects of the same common cause.
Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?