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Mathematics for IGCSE & O level - Proportion (Section 2 - No. 50)

If *y* varies inversely as *x*, and *y* = 4 when *x* = 3, what is the value of *x* when *y* = 6?
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6

설명

Since y=k/x, 4=k/3, so k=12. Therefore, 6=12/x, which gives x=2.

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