An alloy contains copper, zinc and tin in the ratio 4:5: 6 respectively. Another alloy containing copper and tin is melted and mixed with the first alloy. If the mixture contains copper, zinc and tin in the ratio 13:1:3, find the ratio of copper and tin in the second alloy. 12:5 9:25 25:9 61:9 None of these
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An alloy contains zinc, copper and tin in the ratio 2:3:1 and another contains copper, tin and lead in the ratio 5:4:3. If equal weights of both alloys are melted together to form a third alloy, then the weight of lead per kg in new alloy will be: ✖ A.
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