If a color TV is sold at a price reduction of 10%, it can make a profit of 215 yuan. If it is sold at a price reduction of 20%, it will lose 215 yuan. How much is the price of the color TV set?
一种彩电，如果减少定价的10%出售，可盈利215元，如果减少定价的20%出售，就亏本215元，彩电定价多少元？
<gadget id="calculator">215 + 215</gadget>
<output>430</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/5) - (1/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">430 / (1/10)</gadget>
<output>4_300</output>

<result>4_300</result>