Answer:
37.5% per bottle.
Step-by-step explanation:
The price she paid for the shampoo was 240$ for 60 bottles, so the price per bottle is 240/60 = 4 $. Now, she sells each bottle in 5.50$ so the profit per bottle is 5.50-4 = 1.50$. The percentage is calculate with a rule of three:
[tex]\frac{4}{1.50}[/tex] = [tex]\frac{100}{x}[/tex]
where 100 y 100% and x is the percentage we are searching for. So,
x = [tex]\frac{1.50*100}{4}[/tex]
x = 37.5%.
