Answer:
40%
Step-by-step explanation:
The profit margin is given by the gross profit divided by total sales.
In this case, Gadget mania has a gross profit of $6 per microphone, while each microphone sells for $15.
Therefore, the profit margin is:
[tex]P=\frac{6}{15}\\P=0.4=\frac{40}{100}= 40\%[/tex]
Gadget Mania's profit margin is 40%.
