Answer
$= \frac{9yz^{2}}{20}$
Work Step by Step
$\frac{3xy}{8z^{2}} \times \frac{6z^{4}}{5x}$
$= \frac{3xy(6z^{4})}{8z^{2}(5x)}$
$= \frac{18xyz^{4}}{40xz^{2}}$
$= \frac{2xz^{2}(9yz^{2})}{2xz^{2}(20)}$
$= \frac{9yz^{2}}{20}$
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