Răspuns :
x-cat cantareste cutia
y-cat cantaresc biscuitii
1/3 din y= y/3
y- y/3= (3y-y)/3= 2y/3-restul
x+2y/3=300
y=6x
x+ 2*6x/3=300
x+2*2x=300
x+4x=300
5x=300
x=60
y=6*60=360
y-cat cantaresc biscuitii
1/3 din y= y/3
y- y/3= (3y-y)/3= 2y/3-restul
x+2y/3=300
y=6x
x+ 2*6x/3=300
x+2*2x=300
x+4x=300
5x=300
x=60
y=6*60=360