Question

$25$% of the candidates who appeared in an examination failed to qualify and only $450$ candidates qualified. The number of candidates, who appeared in the examination was

• A. $700$
• B. $600$
• C. $550$
• D. $500$

Answer 1

The correct option is B $600$

Let the number of students who appeared be $x$.
According to the question,
$75$% of $x=450$
$\therefore x=\frac{450\times 100}{75}=600$
Hence, number of candidates who appeared are $600$.