Answer: The required sale price of the jacket is $140.
Step-by-step explanation: Given that while shopping, we see a jacket marked down 20% and the original price of the jacket is $175.
We are to find the sale price of the jacket.
Since we are getting a discount of 20%, so the sale price will be original price minus the discount price.
The discount price is given by
[tex]D_p=20\%\times 175=\dfrac{20}{100}\times175=\dfrac{175}{5}=35.[/tex]
Therefore, the sale price of the jacket is given by
[tex]S_p=175-D_p=175-35=140.[/tex]
Thus, the required sale price of the jacket is $140.