Divide the total mass by the mass per bag.<br><br>
&bull; Number of bags = \( 12 \div \frac{3}{4} = 12 \times \frac{4}{3} = \frac{48}{3} = 16 \)<br><br>
Check: 16 bags × \( \frac{3}{4} \) kg = 12 kg. ✓<br><br>
Final Answer: 16