The distance between A and B is 140 kilometers. A car travels 112 kilometers from A to B in 2 hours. At this speed, how many hours will it take for the car to go from A to B? (Solve with ratio)
甲、乙两地相距140千米，一辆汽车从甲地到乙地，2小时行了112千米，照这样的速度，这辆汽车从甲地到乙地要用多少小时？(用比例解)
<gadget id="calculator">140 * 2</gadget>
<output>280</output>

<gadget id="calculator">280 / 112</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>