The road from Nayong to Guiyang is about 260 kilometers long. A car and a bus depart from Nayong and Guiyang respectively at the same time. The speed of the car is 60 km/h. After 2.6 hours, the two cars meet. How many kilometers does the bus travel per hour?
纳雍到贵阳的公路大约长260千米．一辆轿车和一辆客车分别从纳雍和贵阳同时相对开出，轿车的速度是60千米/时，经过2.6小时后两车相遇．客车每小时行多少千米？
<gadget id="calculator">260 / 2.6</gadget>
<output>100</output>

<gadget id="calculator">100 - 60</gadget>
<output>40</output>

<result>40</result>