So:
6⅔kg=20/3
1.20/3kg×2/5=8/3kg
2.20/3kg×3/8=5/2kg
3.20/3kg×(1-(3/8+2/5)) =20/3kg×(1-31/40) =20/3kg×9/40 =3/2kg
Schüler, Punkte: 67
So:
6⅔kg=20/3
1.20/3kg×2/5=8/3kg
2.20/3kg×3/8=5/2kg
3.20/3kg×(1-(3/8+2/5)) =20/3kg×(1-31/40) =20/3kg×9/40 =3/2kg