Răspuns :
10kg=5 litri de sirop/:2
2kg=1litru
1 bidon are 5 litri===>4 bidoane are 20 litri si 2kg =1 litru==>2*20-10=30 kg
2kg=1litru
1 bidon are 5 litri===>4 bidoane are 20 litri si 2kg =1 litru==>2*20-10=30 kg