Mr. Krogman usually prices his umbrellas for $8 each. However, on rainy days he increases them by 75%. How much does he charge for an umbrella on a rainy day?

The answer is 12.5.

Step-by-step explanation:

Step 1 : 8 dollars times 75% is 4.5

Step 2: Add 4.5 plus 8 dollars

Step 3: 12.5

On a rainy day an umbrella costs 12.50 dollars in total.