Discount = Original price - Sale price.<br>
Percentage discount = \(\frac{\text{Discount}}{\text{Original price}} \times 100\%\).<br><br>
• Original price = $120<br>
• Sale price = $72<br>
• Discount = $120 - $72 = $48<br>
• Percentage discount = \(\frac{48}{120} \times 100\%\)<br>
• = \(\frac{48}{120} = \frac{2}{5} = 0.4\)<br>
• = 40%<br><br>
A discount of 40% was given.<br><br>
Final Answer: 40%