Answer:
2.35
Step-by-step explanation:
20 and that should be correct, if you need an explanation just ask



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Answer:
12
Step-by-step explanation:
Zinc = 7/18
Divide 4.9 by 7 = 0.7
Multiply by 18 = 12.6
The answer is 12.6 lbs of alloy. Sorry if I'm wrong