LCM( 16, 24 ) = 48
The formula for finding LCM is
$$ \text{LCM} (a, b) = \frac{ a \cdot b }{ \text{GCD}(a,b)} $$In this example we have: a = 16, b = 24 and GCD(16, 24) = 8.
$$ \text{LCM} (16, 24) = \frac{ 16 \cdot 24 }{ \text{GCD}(16,24)} = \frac{ 384 }{ 8 } = 48 $$