Final answer:
To find the percentage of mocha cupcakes sold, divide the number of mocha cupcakes sold by the total number of cupcakes sold and multiply by 100. 35% of the cupcakes sold were mocha cupcakes.
Step-by-step explanation:
To find the percentage of mocha cupcakes sold, we divide the number of mocha cupcakes sold (28) by the total number of cupcakes sold (28 + 52 = 80) and multiply by 100.
Percentage of mocha cupcakes sold = (28 / 80) × 100% = 35%
Therefore, 35% of the cupcakes sold were mocha cupcakes.