In an alloy of German silver the ratio o...

In an alloy of German silver the ratio of copper to zinc was 19:6 while that of nickel to zinc was 7:4. The ratio of copper to zinc to nickel in the alloy was:

A

`38:12:21`

B

`133:42:24`

C

`19:44:4`

D

`19:24:7`

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The correct Answer is:

A

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