Answer & Solution
Answer: Option A
Solution:
Average number of students appearing in Aptitude Test from all towns
$$ = \frac{\left(40+32.5+17.5+42.5+35\right)\times1000}{5}$$
$$\eqalign{
& = \frac{167.5\times1000}{5} \cr
& = 33.5\times1000 \cr
& = 33500 \cr} $$