Two cars, A and B, go from A to B, and the speed ratio is 5:4; A arrives in 5 hours, and B arrives in how many hours.
甲、乙两辆汽车从A地去B地，速度比是5：4；甲车5小时到达，乙车多少小时到达．
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">5 * (5/4)</gadget>
<output>25/4 = around 6.25</output>

<result>25/4 = around 6.25</result>