A car travels from point A to point B, and plans to travel 29.75 kilometers per hour, and can reach it in 4.2 hours. If it arrives in 3.5 hours, how many kilometers per hour?
一辆汽车从甲地到乙地，计划每小时行29.75千米，4.2小时能到达．如果3.5小时到达，每小时行多少千米？
<gadget id="calculator">4.2 / 3.5</gadget>
<output>1.2</output>

<gadget id="calculator">29.75 * 1.2</gadget>
<output>35.7</output>

<result>35.7</result>