Given Data:
The cost of the mouthwash is: P=$2.99
The sale discount of the mouthwash is: d=20%
The expression to calculate the sale discount price of the mouthwash is,
[tex]\begin{gathered} s=P\times\frac{100-d}{100} \\ s=2.99\times\frac{100-20}{100} \\ s=2.99\times\frac{80}{100} \\ s=2.99\times0.8 \\ s=2.392 \end{gathered}[/tex]Thus, the new price of the mouth wash is $2.392.
