“Macabre” refers to the quality of having a grim or ghastly atmosphere. The use of “macabre” fits the context of describing the details of a murder in a disturbing and horror-like manner.
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?