a retailer sold an appliance for $ 100. if the retailer ' s gross profit on the appliance was 25 percent of the retailer ' s cost for the appliance, how many dollars was the retailer ' s gross profit?  Choose the most appropriate option:
A) $ 10	B) $ 16	C) $ 20	D) $ 24	E) $ 25
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) + 1</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1 / (5/4)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * 100</gadget>
<output>80</output>

<gadget id="calculator">100 - 80</gadget>
<output>20</output>

<result>C</result>
a retailer sold an appliance for $ 100. if the retailer ' s gross profit on the appliance was 25 percent of the retailer ' s cost for the appliance, how many dollars was the retailer ' s gross profit?
subtract(100, multiply(divide(const_1, add(divide(25, 100), const_1)), 100))
let p be the original price paid by the retailer . 1.25 * p = 100 p = 80 the profit is $ 20 . the answer is c .