问题描述：
英语翻译
an alloy consists of nickel and copper in the ratio of 4:7.if the alloy weighs 3.14kg,how much of each metal was uesd?
an alloy consists of nickel and copper in the ratio of 4:7.if the alloy weighs 3.14kg,how much of each metal was uesd?
问题解答：
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