A retailer bought a coat at wholesale and marked it up 90% to its initial price of $76. By how many more dollars does he need to increase the price to achieve a 100% markup?  Choose the correct choice.
A) 2  B) 4  C) 6  D) 8  E) 10
Let x be the wholesale price.   Then 1.9x= 76 and x = 76/1.9= 
<gadget id="calculator">76/1.9</gadget>
<output>40</output>
40.   To achieve a 100% markup, the price needs to be $80.   The retailer needs to increase the price by $4 more.   The answer is 4.
<result>B</result>
A retailer bought a coat at wholesale and marked it up 90% to its initial price of $76. By how many more dollars does he need to increase the price to achieve a 100% markup?