It took Xiaohong 8 hours to go from home to her grandmother's house by car during the holiday, and 10 hours to go back by car along the original road. By what percentage is the going speed faster than the returning speed?
小红放假坐车从家里到外婆家用了8小时，沿原路返回坐车用了10小时．去的速度比返回的速度快了百分之几？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

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

<gadget id="calculator">(1/8) - (1/10)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(1/40) / (1/10)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>