Li Ming's father runs a fruit shop. According to the initial price, he can make a profit of 0.2 yuan for every kilogram of fruit sold. Later, Li Ming suggested that his father lower the price to sell. As a result, the daily sales volume doubled after the price reduction, and the daily income The profit is also increased by 50% than the original one. How much is the price reduction per kilogram of fruit.
李明的爸爸经营一个水果店，按开始定的价，每卖出1千克水果可获利0.2元，后来李明建议爸爸降价销售，结果降价后每天的销售量增加了1倍，每天的获利也比原来增加50%．每千克水果降价多少元．
<gadget id="calculator">0.2 * 2</gadget>
<output>0.4</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">0.2 * (3/2)</gadget>
<output>0.3</output>

<gadget id="calculator">0.4 - 0.3</gadget>
<output>0.1</output>

<gadget id="calculator">0.1 / 2</gadget>
<output>0.05</output>

<result>0.05</result>