Answer
$450$.
Work Step by Step
$25 = 5 \cdot 5$
$18 = 2 \cdot 3 \cdot 3$
$30 = 2 \cdot 3 \cdot 5$
$5 = 5$
LCM $= 2 \cdot 3 \cdot 3 \cdot 5 \cdot 5 = 450$.
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