Answer:
2400%
Explanation:
To calculate the percent markup, we need to first find the difference between the cost and the selling price: $3.00 - $0.12 = $2.88
Then, we can divide that difference by the cost and multiply by 100% to express the result as a percentage:
($2.88 / $0.12) * 100% = 2400%
So the percent markup on the cup of soda is 2400%.