the ratio of zinc and copper is an alloy is 7:9 if the weight of the copper in the alloy is 11.7kg, find the weight in the zinc in the alloy.
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Answered by
4
Answer:
Given that,
Weight of zinc =7x
Weight of copper =9x
Total weight of alloy
7x+9x=11.7kg
x=1.3 kg
Hence,
Weight of zinc =7×1.3=9.
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Answered by
3
Answer:
Step-by-step explanation:
zinc : copper = 7 : 9 : : x : 11.7
= 7/9 x/11.7
cross multiplication
= 7*11.7=9*x
= 81.9 = 9x
= 81.9/9 = x
= 9.1 = x
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