If 2 kg of metal, of which 1/3 is zinc and the rest is copper, be mixed with 3 k

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If 2 kg of metal, of which 1/3 is zinc and the rest is copper, be mixed with 3 kg of metal, of which 1/4 zinc and the rest is copper, what is the ratio of zinc to copper in the mixture ?

A. 0.570833333
B. 0.738194444
C. 0.821527778
D. 0.654166667

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