An alloy is made from lead and iron in the ratio 4:7. How much lead ne – InterviewSolution

1.	An alloy is made from lead and iron in the ratio 4:7. How much lead needs to be mixed with 8.4kg of iron?
Answer» Zinc : copper = 7 : 9 : : x : 11.7= 7/9 x/11.7cross MULTIPLICATION= 711.7=9x= 81.9 = 9x= 81.9/9 = x= 9.1 = x

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