Question

Pls help me out to solve this !?

Answer 1

number of candidates appeared = 8000

Solution is attached.

Answer 2

Let tge total amount be x
therefore
$8x \div 100 - 7x \div 100 = x \div 100 = 80$
So
$x \div 100 = 80$

Therefore
$x = 100 \times 80 = 8000$