Bronze medal

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

Correct answer:

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

Step-by-step explanation:

$$\begin{gathered} k=8.5/1=\frac{17}{2}=8.5 \\ Cu=0.95\cdot k=0.95\cdot 8.5=8.075\text{g} \end{gathered}$$

$Sn=0.04\cdot k=0.04\cdot 8.5=0.34\text{g}$

$Zn=0.01\cdot k=0.01\cdot 8.5=0.085\text{g}$

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