Two cars A and B are traveling toward each other from AB, which is 328 kilometers apart. After 4 hours, the cars meet. It is known that car A travels an average of 47 kilometers per hour. How many kilometers per hour does car B travel on average?
甲乙两车从相距328千米的AB两地相向而行，经过4小时辆车相遇，已知甲车平均每小时行47千米，乙车平均每小时行多少千米？
<gadget id="calculator">328 / 4</gadget>
<output>82</output>

<gadget id="calculator">82 - 47</gadget>
<output>35</output>

<result>35</result>