The word "customary" means something that is traditional, commonly practiced, or widely accepted.
The closest synonym among the given options is:
"Accepted" – which means something that is recognized or followed by many people.
The correct synonym is:
"Accepted" (Option A).
Thus, the correct answer is Option A.
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?