The distance between A and B is 409.5 kilometers. Two cars A and B start from the two places at the same time and drive towards each other. They meet each other in 3 hours. It is known that car A travels an average of 65.5 kilometers per hour, and how many kilometers per hour does car B travel on average? ? (solution by equation)
A、B两地相距409.5千米，甲、乙两辆汽车从两地同时出发相向而行，3小时相遇，已知甲车平均每小时行65.5千米，乙车平均每小时行多少千米？(用方程解)
<gadget id="calculator">65.5 * 3</gadget>
<output>196.5</output>

<gadget id="calculator">409.5 - 196.5</gadget>
<output>213</output>

<gadget id="calculator">213 / 3</gadget>
<output>71</output>

<result>71</result>