question_answer

The number of people living in an apartment is 2500. The 20% of working people are males and rest are females. If 5% of the male are working as a grade B officers and 40% of the females working as a grade B officer, then find the percentage of people working as a grade A officers.

A)  87%

B)  85%         

C)  92%

D)  67%

E)  None of these