The original price of a t-shirt is $6. And Merry marks up the price by 45%.
We need to find how much is the profit, in other words, we need to find how much is that 45% that Merry marks up from the original price.
Calculating 45% of $6:
The general process to calculate a percentage is to take the quantity (in this case 6), divide it by 100, and then multiply by the percentage we want (in this case 45):
Solving this expression:
The profit she makes from each t-shirt sold is $2.7.
Answer: $2.7