Final answer:
The markup amount on the scarf is $4.45. For the guitar, the markup percentage based on cost is 77%.
Step-by-step explanation:
Markup Calculations
To figure out the amount of markup in dollars and percentage, we will follow two steps. First, we subtract the cost price from the selling price to find the markup amount. Then, to find the markup percentage, we divide the markup amount by the cost price and multiply by 100.
a. Scarf Markup Calculation
Selling Price: $17.95
Cost Price: $13.50
Markup Amount: $17.95 - $13.50 = $4.45
b. Guitar Markup Percentage Calculation
Selling Price: $1,203.60
Cost Price: $680
Markup Amount: $1,203.60 - $680 = $523.60
Markup Percentage: ($523.60 ÷ $680) × 100 = 77%