Răspuns :
5 lazi ...................... x cutii
1 lada ...................... 12 cutii⇒x=15×5:1=60 de cutii in toate cele 5 lazi
1 cutie ...................... 9 kilograme
60 de cutii................ y kilograme⇒y = 60×9:1=540 de kilograme
540 kg = 540×100 dag = 54000 dag