From A to B, car A travels 10% of the whole journey every 5 minutes, and car B travels 8% of the whole journey every 6 minutes. How many minutes earlier does car B leave than car A?
从A地到B地，甲车每5分钟行驶全程的10%，乙车每6分行驶全程的8%，乙车先出发，甲车后出发，但两车恰好同时到达B地．乙车比甲车早出发多少分．
<gadget id="calculator">8 / 100</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">(2/25) / 6</gadget>
<output>1/75 = around 0.013333</output>

<gadget id="calculator">1 / (1/75)</gadget>
<output>75</output>

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

<gadget id="calculator">(1/10) / 5</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1 / (1/50)</gadget>
<output>50</output>

<gadget id="calculator">75 - 50</gadget>
<output>25</output>

<result>25</result>