A merchant marks goods up by 80% and then offers a discount on the marked price. The profit that the merchant makes after offering the discount is 35%. What % discount did the merchant offer? Pick one
A) 20% B) 25% C) 30% D) 35% E) 40%
Let P be the original price of the goods and let x be the rate after the markup.   (1.8P)*x = 1.35P   x = 1.35/1.8= 
<gadget id="calculator">1.35/1.8</gadget>
<output>0.75</output>
0.75 which is a discount of 25%.   The answer is 25%.
<result>B</result>
A merchant marks goods up by 80% and then offers a discount on the marked price. The profit that the merchant makes after offering the discount is 35%. What % discount did the merchant offer?