Question

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Answer 1

Answer:

The total number of students is 300.

Step-by-step explanation:

Percentage of students who passed = 85%

Percentage of students who failed = (100 - 85)%

Percentage of students who failed = 15%

Number of students who failed = 45

Let the total number of students be x

$Percentage \: of \: students \: who \: failed = \frac{Number \: of \: students \: who \: failed}{Total \: number \: of \: students} \times 100 \\ \\ \\ATQ ; \: 15 = \frac{45}{x} \times 100 \\ \\ = > x = \frac{45}{15} \times 100 \\ \\ = > x = 300$

The total number of students is 300.

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