Question

If 4x=8y, the value of y/x is

Answer 1

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$4x = 8y \\ \\ \frac{x}{y} = \frac{8}{4}$

$\frac{y}{x} = \frac{1}{2}$
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Answer 2

$4x = 8y \\ x = \frac{8y}{2} = 4y \\ \\ y = \frac{4x}{8} = 0.5x$

$\frac{0.5x}{4y} = \frac{ \frac{5x}{10} }{4y} = \frac{5x}{40y} = \frac{x}{8y}$