It takes 6 hours for a car to travel 50 kilometers per hour from point A to point B. If it needs to arrive 1 hour earlier, how many kilometers per hour will it travel on average? (Solve using ratio method)
一辆小车从甲地到乙地每小时行50千米，需要6小时，如果要提前1小时到达，平均每小时要行多少千米？(用比例方法解答)
<gadget id="calculator">50 * 6</gadget>
<output>300</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">300 / 5</gadget>
<output>60</output>

<result>60</result>