A truck and a bus travel towards each other at the same time from two places 220 kilometers apart, meet each other in 2.5 hours, and the bus travels 48 kilometers per hour. How many miles does the truck travel per hour?
一辆货车和一辆客车从相距220千米的两地同时相向而行，2.5小时相遇，客车每小时行48千米．货车每小时行多少千米？
<gadget id="calculator">220 / 2.5</gadget>
<output>88</output>

<gadget id="calculator">88 - 48</gadget>
<output>40</output>

<result>40</result>