1.

In an alloy of German silver the ratio of copper to zinc was 17:7 while that of nickel to zinc was 4 :3. The ratio of copper to zinc to nickel in the alloy was

A. 0.72296296296296
B. 2.1399074074074
C. 2.8530208333333
D. 0.7278125
Answer» C. 2.8530208333333


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