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German Silver is an alloy composed of nickel, zinc, and copper in a ratio of 3:4:13.
How many kilograms of each metal are needed to make 4 kg of this alloy?

Respuesta :

You need 3 portions of nickel, 4 portions of zinc, and 13 portions of copper, so that is a total of 3+4+13=20 portions
the 20 portions together weigh 4kg, so each portions weighs 4/20=1/5 kg=0.2 kg
so you will need 0.2*3=0.6 kg of nickel, 0.2*4=0.8 kg of zinc, and 0.2*13=2.6 kg of copper. 

Answer:

0.6kg of nickel

0.8kg of zinc

2.6kg of copper

Step-by-step explanation:

in the alloy there are 3 parts of nickel, 4 parts of zinc and 13 parts of copper. Which adds up to 20 parts in total.

Writing that in fractions:

[tex]\frac{3}{20}[/tex] is nickel

[tex]\frac{4}{20}[/tex] is zinc

[tex]\frac{13}{20}[/tex] is copper

Kilograms of each metal in 4kg of alloy(multiply each fraction by 4)

[tex]\frac{12}{20}[/tex]=0.6 kg of nickel

[tex]\frac{16}{20}[/tex]=0.8 kg of zinc

52/20=2.6 kg  of copper

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