Ononot — An alloy M1 contains metals X and Y in a ratio of 5:2. A sec

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An alloy $M_1$ contains metals $X$ and $Y$ in a ratio of $5:2$ . A second alloy $M_2$ contains $X$ and $Y$ in a ratio of $3:4$ . If $7$ kg of $M_1$ and $14$ kg of $M_2$ are fused, what is the ratio of $X$ to $Y$ in the resulting alloy?