The speed ratio between A and B is 8:5 from point A to point B. It is known that it takes 40 minutes for B to travel this distance, how many minutes does it take for A to travel this distance.
甲、乙两人从A地到B地速度比是8：5，已知乙行这段路用了40分钟，甲行这段路用多少分钟．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">40 * (5/8)</gadget>
<output>25</output>

<result>25</result>