Question

In an examination 65% of the total examinees passed if the
number of failures 420 the total number of examinees

Answer 1

total number of examiner are 1200.

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Answer 2

if 65% total examinees are passed than 35% failures.

let the total number of examinees are x than

$35\% \: \: \: of \: x = 420 \\ \frac{35x}{100} = 420 \\ x = 420 \times \frac{100}{35} \\ x = 1200$

the total number of examinees are 1200