A construction team built a road. On the first day, 30% of the project was completed, and (1/4) of the whole project was completed on the second day. The second day was 10 kilometers shorter than the first day. What is the total length of this road? km?
某工程队修一条公路，第一天完成了工程的30%，第二天完成了全工程的(1/4)，第二天比第一天少修了10千米，这条路全长多少千米？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/10) - (1/4)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">10 / (1/20)</gadget>
<output>200</output>

<result>200</result>