Question

In an examination, 55% of the students passed and 621 failed. If the number of students for the exam was 69% of those who had applied for the exam, how many students applied for the examination?​

Answer 1

Answer:

2000

Step-by-step explanation:

Let students applied for examination be 'x'

No. of students for exam = 69% of x =.69x

passed students = 55% of 0.69x = 0.3795x

failed = 621

passed students + failed students = number of students for the exam

0.3795x + 621 = 0.69x

by solving we get x = 2000

Answer 2

Answer- 2000 students applied for the examination

Explanation-

Given-In an examination, 55% of the students passed and 621 failed.

Find- how many students applied for the examination?​

Solution- percentage, a relative value indicating hundredth parts of any quantity. One percent (symbolized 1%) is a hundredth part; thus, 100 percent represents the entirety and 200 percent specifies twice the given quantity. percentage. Related Topics: mathematics percentile.

According to the question,

Let the student applied to be

Number of students in exams 69% of x

Passed students $=55$% of $0.69x$

Failed student $=45$% of $0.69x$

Now given is

$45$ % of $0.69x=621$

$\frac{45}{100}\times \frac{0.69x}{100}=621$

$x=\frac{621\times 100\times 100}{45\times 0.69}$

$x=2000$

So, the number of students who applied for the examination is 2000.

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