Final answer:
The percent markup for a cup of coffee at Coffee King is 300%, which is calculated by dividing the difference between the selling price and the cost price by the cost price and then multiplying by 100%.
Step-by-step explanation:
The percent markup for a cup of coffee can be found by calculating the difference between the selling price and the cost price, and then dividing that by the cost price.
We will use the following formula for percent markup:
Percent Markup = ((Selling Price - Cost Price) / Cost Price) x 100%.
In this case, Coffee King buys coffee for $1.15 a cup and sells it for $4.60.
So, the calculation would be ((4.60 - 1.15) / 1.15) x 100%, which equals (3.45 / 1.15) x 100% = 300%.
Therefore, the percent markup for a cup of coffee is 300%.