Answer:
c = $20,000
Explanation:
Represent the "cost price" (wholesale price) by c, or 1.00c.
A 25% loss would then be expressed as 0.25c, after which the selling price would be (1.00 - 0.25)c = $15,000.
Solving for the cost price: 0.75c = $15,000, so that c = $15,000/0.75 =
c = $20,000