Bill made a profit of 10% by selling a product. If he had purchased that product for 10% less and sold it at a profit of 30%, he would have received $28 more. What was his original selling price?	Select
A) $200
B) $260
C) $320
D) $380
E) $440
Let P be the original purchase price of the product.   Bill originally sold the product for 1.1*P.   In the second scenario, the purchase price is 0.9*P.   A 30% profit means the selling price would be 1.3*0.9*P = 1.17*P   Thus, according to the information in the question, 1.17P - 1.1P = 28   0.07 = 28   P = 400   The original selling price was  400*1.1= 
<gadget id="calculator"> 400*1.1</gadget>
<output>440</output>
440.   The correct answer is $440.
<result>E</result>
Bill made a profit of 10% by selling a product. If he had purchased that product for 10% less and sold it at a profit of 30%, he would have received $28 more. What was his original selling price?