an alloy contains copper and zinc in ratio 7:3 if it contains 12.6g copper. ,how much did the alloy weight
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1
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I hope you understand. this is solved by unitary method .
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let the ratio of copper and zinc be 7x,3x
ATQ-
7x=12.6
x=12.6/7
x=1.8
7x=12.6g
3x=3*1.8=5.4g
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