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15 lazi mere+5 lazi pere=230kg, 29lazi mere+5 lkazi pere=338kg.Cat cantareste o lada cu mere

Răspuns :

Aceasta problema se rezolva cu metoda
comparatiei

15 lazi mere........5 lazi pere....230 kg (2)
29 lazi mere.......5 lazi pere.....338 kg (1 )
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( 1 ) -( 2 )
14 lazi mere............//..................108 kg
o lada mere = 108 : 14 = 7 rest 10 (7,71... kg)