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 $35 more. What was his original selling price?	Pick:
A) $180 B) $280 C) $420 D) $550 E) $700
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 = 35   0.07 = 35   P = 500   The original selling price was  500*1.1= 
<gadget id="calculator"> 500*1.1</gadget>
<output>550</output>
550.   The correct answer is $550.
<result>D</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 $35 more. What was his original selling price?