In an alloy the proportion of copper and lead is 5 : 2. If 1.250 kilogram of lead is added in 17.500 kilogram of the same alloy - then the proportion of copper and lead will become-

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In an alloy the proportion of copper and lead is 5 : 2. If 1.250 kilogram of lead is added in 17.500 kilogram of the same alloy - then the proportion of copper and lead will become-






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