the ratio of zinc and copper is in an alloy is 7 : 9 .if the weight of copper in the alloy is 12.6 kg, find the weight of zinc in it .
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Answer:
weight of zinc is 9.8kg
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Answered by
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Answer:
answer = zinc 9.8 kg
zinc /copper = 7/9
zinc/12.6 = 7/9
9 zinc = 12.6 × 7
zinc = 12.6 × 7 / 9
zinc = 9.8 kg
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