The distance between Shanghai and Wuhan is 1100 kilometers. Ships A and B depart from Shanghai and Wuhan at the same time and meet each other after 25 hours. Ship A traveled 500 kilometers when they met. How many kilometers per hour does boat B travel on average? (solution by equation)
上海和武汉相距1100千米，甲乙两船同时从上海和武汉相对开出，经过25小时相遇．相遇时甲船行驶了500千米．乙船平均每小时行多少千米？(用方程解)
<gadget id="calculator">1_100 - 500</gadget>
<output>600</output>

<gadget id="calculator">600 / 25</gadget>
<output>24</output>

<result>24</result>