Solution:
1. Given:
- Cost price (CP) = USD 80
- Markup percentage = 60%
2. Calculate the amount of markup:
\text{Markup amount} = \text{CP} \times \frac{\text{Markup percentage}}{100}
\text{Markup amount} = 80 \times \frac{60}{100}
\text{Markup amount} = 80 \times 0.6
\text{Markup amount} = 48 \, \text{USD}
3. Determine the selling price by adding the markup amount to the cost price:
\text{Selling Price (SP)} = \text{CP} + \text{Markup amount}
\text{SP} = 80 + 48
\text{SP} = 128 \, \text{USD}