Question

Solve the 4 and 5 problem.

Answer 1

Senario 1:
300 apples among s students
Each student gets X apples
X=300/s
or 300=X*s - - - - - - - - - (1)

Senario 2:
300 apples among s+10 students
Now each student gets x apples
x=X-1 - - - - - - - - - - -(One less apple than first Senario)
x=300/(s+10)
or 300= x*(s+10) - - - - - - - - - - - (2)

Equating (1) & (2) we get,
X*s=x*(s+10)
X*s=(X-1)*(s+10)
Xs=Xs+10X-1s-10
0=10X-1s-10
s=10X-10

By trial & error method,
Putting X=1 we get s=0 but Number of students can't be zero so,
Putting X=2 we get s=10