Bronze medal

To produce 1 kg of bronze must be 0.95 kg copper, 0.04 kg of tin, 0.01 kg zinc. The bronze medal has a weight of 8.5 g. How much copper, tin and zinc does medal have?


Cu =  8.075 g
Sn =  0.34 g
Zn =  0.085 g


k=8.5/1=172=8.5 Cu=0.95 k=0.95 8.5=32340=8.075 gk=8.5 / 1=\dfrac{ 17 }{ 2 }=8.5 \ \\ Cu=0.95 \cdot \ k=0.95 \cdot \ 8.5=\dfrac{ 323 }{ 40 }=8.075 \ \text{g}
Sn=0.04 k=0.04 8.5=1750=0.34 gSn=0.04 \cdot \ k=0.04 \cdot \ 8.5=\dfrac{ 17 }{ 50 }=0.34 \ \text{g}
Zn=0.01 k=0.01 8.5=17200=0.085 gZn=0.01 \cdot \ k=0.01 \cdot \ 8.5=\dfrac{ 17 }{ 200 }=0.085 \ \text{g}

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