x= masa cynku3x = masa miedzix + 3x = 244x = 24 /: 4x = 63x = 3* 6 = 18 kg
18 : 24 = 0,75 =75%
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x= masa cynku
3x = masa miedzi
x + 3x = 24
4x = 24 /: 4
x = 6
3x = 3* 6 = 18 kg
18 : 24 = 0,75 =75%