The ratio of copper and zinc in an alloy is 5 :7. if the all contains 35.5 grams of copper, how many grams of zinc does it contain?
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Answer:
Ratio of Copper and zinc = 5:7
Let the total wt of alloy=x
Xx5/12=35.5
x = 426 / 5 = 85.28g
zinc = 85.28x7/12=49.7g
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