14 times (option C)
Explanation:The amount the shampoo container contains = 8 2/5 ounces
Amount to be used per wash = 3/5 ounce
let the number of times you can wash your hair = y
The amount the shampoo container contains = Amount to be used per wash × number of times you can wash your hair
8 2/5 = 3/5 × y
[tex]\begin{gathered} 8\text{ }\frac{2}{5}\text{ = }\frac{\text{42}}{5} \\ \frac{\text{42}}{5}\text{ = }\frac{3}{5}\times y \\ \frac{\text{42}}{5}\text{ = }\frac{3y}{5} \end{gathered}[/tex][tex]\begin{gathered} \text{cross multiply} \\ 5(42)\text{ = 5(3y)} \\ 210\text{ = 15y} \\ y\text{ = 210/15} \\ y\text{ = 14} \end{gathered}[/tex]Hence, you can wash your hair 14 times (option C)
