Ava45018
Ava45018
06-01-2018
Mathematics
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Аноним
Аноним
06-01-2018
weight of copper = 1/2w and weight of zinc = 1/2 w
So:-
c = 0.5w*6 + 0.5w*3
c = 3w + 1.5w = 4.5w
this equation is the same as choice A
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