1)
1 1
14--- - 1 --- =13kg.
2 2
2)
1 2 5 8
--- +--- +---- = ---- (1 cutie dulciuri)
8 8 8 8
3)
9 3 4 2
--- - ---- - ---- = -----
9 9 9 9 brazi
4)
t) |_______|
50%|___|
----------------------
1200+(1200:3)=
=1200+400
=1600 lei costa tableta inainte de scumpire
1600+(1600:2)=
=1600+800
=2400 lei costa tableta dupa scumpire
2400-(2400:2)=
=2400-1200
=1200 lei costa acum ,tableta