Question

in the exam 40% students failed and 5559 student passed determine the number of students who failed

Answer 1

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Here is your answer.
Let the total number of students are x

Number of students failed = 40% of x

$\frac{40}{100} \times x \\ \\ = \frac{2x}{5}$

ATQ

$x = \frac{2x}{5} + 5559 \\ x - \frac{2x}{5} = 5559 \\ \frac{5x - 2x}{5} = 5559 \\ \frac{3x}{5} = 5559 \\ x = \frac{5559 \times 5}{3} \\ x = 9265$
So The number of failed students are

$= \frac{2}{5} \times 9265 \\ \\ = 3706$

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