The length of the road from A to B is 220 km. Two cars drive opposite each other. Car A travels 42 kilometers per hour, and car B travels 46 kilometers per hour. After how many hours do the two cars meet? (solution with equation)
甲地到乙地的公路长220千米．两辆汽车从两地相对开出，甲车每小时行驶42千米，乙车每小时行驶46千米，经过几小时两车相遇？(用方程解答)
<gadget id="calculator">42 + 46</gadget>
<output>88</output>

<gadget id="calculator">220 / 88</gadget>
<output>5/2 = around 2.5</output>

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