jest są 3 kartony soku po 1 litr i 2 kartony 1_3 litra
2 kartony 1 litrowe i 3 kartony 1_3
3 kartony *1l =3 l2 kartony *1/3l =2/3l3l+2/3l=3 2/3 l
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2 kartony 1 litrowe i 3 kartony 1_3
3 kartony *1l =3 l
2 kartony *1/3l =2/3l
3l+2/3l=3 2/3 l