The bus leaves every 15 minutes. My brother wants to take the bus at 9:10, but when he arrives at the station, it is already 9:20, so how many minutes will he have to wait before he can take the next bus?
汽车每隔15分钟开出一班，哥哥想乘9时10分的一班车，但到站时，已是9时20分，那么他要等多少分钟才能乘上下一班车．
<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<result>5</result>