Both clothes were sold at a price of 150 yuan each. One piece earns 25%, and one piece loses 25%. How is the merchant's profit and loss in this transaction? How much is the profit and loss?
两件衣服均以150元每件的价格售出．一件赚25%，一件赔25%，商家在这次交易中盈亏状况如何？盈亏多少元？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">150 / (3/4)</gadget>
<output>200</output>

<gadget id="calculator">200 - 150</gadget>
<output>50</output>

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

<gadget id="calculator">150 / (5/4)</gadget>
<output>120</output>

<gadget id="calculator">150 - 120</gadget>
<output>30</output>

<gadget id="calculator">50 - 30</gadget>
<output>20</output>

<result>20</result>