Question

there are some student in a class.each student contribute money equal to the number of student in the class. if total money collected is rupees 6400 find the number of student in the class.​

Answer 1

let the number of students in the class be=X

And it is given that,

money contributed by each student=number of students in the class

therefore,

x×x=6400

X*2=6400

X=+-✓6400

X=80

no.of students can't be negative

so,

no.of students in the class=80