One alloy which contain 90% of copper and 10% of zinc is mixed with an – McqOptions

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1.	One alloy which contain 90% of copper and 10% of zinc is mixed with another alloy containing 96% of copper and 4% of zinc. The ratio in which they are mixed so that the mixture contains 9% of zinc is
A.	5:1
B.	:4
C.	4:1
D.	1
Answer» B. :4

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