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Mathematics 9 Online
OpenStudy (anonymous):

An alloy consist of 27.5 Kg of copper and 2.5 kg of Tin find the ratio by weight of tin to alloy

OpenStudy (phi):

I think they want the ratio of weight of tin divided by the total weight of copper plus tin

OpenStudy (anonymous):

but answer for this question is 13

OpenStudy (anonymous):

how

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