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If $2x = 5y$ and $7y = 10z$, what is the value of $\frac{z}{x}$ expressed as a common fraction?

 Feb 18, 2021
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If 2x = 5y and 7y = 10z, then z/x = 5/2*7/10 = 35/20 = 7/4.

 Feb 18, 2021

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