Question

Total number of students at an examination if $21\%$ fail and the number of failing students $189$, is

• A. $800$
• B. $900$
• C. $1000$
• D. $1200$

Answer 1

The correct option is B $900$

Let the total number of students $=x$

Therefore,

$\frac{21}{100}x=189$

$x=\frac{189\times 100}{21}$

$x=900$

Hence, total number of students = $900$.