Question

5/8 of total students of a school is 400. Find the total number of students in the school.

Answer 1

let total number of students be x

then
5/8x=400
x=400×8/5
x=640

Answer 2

$Let\:the\:total\:number\:of\:students\\be\:x.\\\\A.T.Q.\\\\\frac{5}{8}x=400\\\\x=\frac{400\times8}{5}\\\\x=80\times8\\\\x=640$

$Therefore,\:Total\:number\:of\\students\:in\:the\:school\:are\:640$