Given:
A shoe store uses a 115% markup on cost.
Selling price of pair of shoes = $85.49
To find:
The cost of shoes before markup.
Solution:
Let x be the cost of shoes before markup.
A shoe store uses a 115% markup on cost.
So, the selling price of the shoes is
Selling price of pair of shoes is $85.49.
Therefore, the cost of shoes before markup is $39.76.