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o cutie cu zahar cantareste 1045 dag.Cate grame cantareste cutia goala,stiind ca s-au pus in ea 10 kg de zahar?

Răspuns :

cutie cu zahar=1045dag=10,45kg;
⇒zahar=10kg[de zahar]
⇒cutie goala=10,45kg-10kg
⇒cutie goala=0,45kg=450grame;
1045dag=10,45kg
zahar=10kg  zahar
cutie goala=10,45kg-10kg
cutie goala=0,45kg=450 grame