Question

in an examination 72% of the total examinees passed if the number of failures is 392 find the total number of examination​

Answer 1

Answer:

Answer is 1400 students

Step-by-step explanation:

72% are passed. So 28% have failed.

Let the no. of students be x

28% of x = 392

28/100 × x = 392

x = 392× 100/28

x = 56×25

x = 1400

Answer 2

Answer:

1400

Step-by-step explanation:

let the no.of examinees be x.

no. of examinees who passed=$\frac{18}{25}x$       (simplify 72/100)

so, no. of examinees who failed= $1-\frac{18}{25}x \\= \frac{25x-18x}{25} \\=\frac{7}{25} x$

by condition,

$\frac{7x}{25} = 392\\ 7x = 392$×$25$

x=1400