The mathematical expression which can be used to find the price of the shoes after the discount is: B. 0.70p.
- Let the original price be p.
Given the following data:
To find a mathematical expression which can be used to find the price of the shoes after the discount:
In terms of percentage, the original price of the shoe is 100%. Thus, we would subtract the discount percentage from the original percentage to get the price of the shoes after the discount.
For discount:
[tex]Discount = \frac{30}{100} \times p\\\\Discount = 0.30 \times p[/tex]
For selling price:
[tex]Selling\;price = Original \;price - discount\\\\Selling\;price = p - 0.30p[/tex]
Selling price = 0.70p
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