The average number of students who qualified in the examination from Kolkata and Delhi is what percent of the average number of students who appeared for the exam from the same cities? (rounded off to 2 digits after decimal)

The number of students who qualified from Kolkata are $$2250$$ and from Delhi are $$2000$$, therefore the average number of students who qualified from Kolkata and Delhi are $$\dfrac{2250+2000}{2}=2125$$. The number of students who appeared in the examination from Kolkata and Delhi are $$3250$$ and $$2500$$ respectively, the average, therefore, is $$\dfrac{3250+2500}{2}=2875$$.

The percentage value of the number of average qualifiers out of the total students appeared is $$\dfrac{2125}{2875}\times 100 = 73.91\%$$