Question

In an examination, 90% of the candidates passed and 80 candidates failed. How many candidates had
appeared in the examination?
​

Answer 1

800 candidates appeared for the exam

Step-by-step explanation:

let the total number of candidates be x

10% of student failed

10/100 *x100/10

x= 800

so 800 candidates appeared for the exam

Answer 2

Step-by-step explanation:

${ \sf{ \underline{ \red{ \underline{ \red{Answer}}}} : -}}$

$\displaystyle \sf \ \: according \: to \: the \: question\\ \\ \displaystyle \sf \tt : \implies \: 10\% = 80 \\ \\ \displaystyle \sf \tt : \implies \:1\% = 8 \: \: \: \\ \\ \displaystyle \sf \tt : \implies \:100\% = 8 \times 100 \\ \\ \displaystyle \sf \tt : \implies \:100\% \: = \: 800 \: \: \: \: \: \:$