To determine the selling price per valentine that would result in a profit of zero, we start by calculating the total cost of supplies and then dividing it by the number of valentines.
The art club spent $45 on supplies and made 60 valentines. The selling price (P) that would result in a profit of zero can be found by setting the total revenue equal to the total cost.
- Total Cost: $45
- Number of Valentines: 60
To break even (zero profit), the total revenue (selling price per valentine multiplied by the number of valentines) must equal the total cost:
\[ \text{Total Revenue} = \text{Number of Valentines} \times \text{Selling Price} \]
Setting this equal to the total cost:
\[ 60 \times P = 45 \]
Now, solving for P:
\[ P = \frac{45}{60} = 0.75 \]
Thus, the selling price per valentine that would result in a profit of zero is $0.75.