Răspunsuri

2014-09-16T20:37:31+03:00
7 bile + cutia = 38 kg
12 bile + cutia = 48 kg
-----------------------------------
5 bile = 10 kg

=> 1 bila = 1 kg

7 kg + cutia = 38 kg
cutia = 38 kg - 7kg
cutia = 31 kg

Sper ca am facut bine