The distance between A and B is 598 kilometers. A passenger car travels from A to B, and a truck travels from B to A. The passenger car drives for 2 hours before the truck leaves. The truck meets the passenger car after driving for 2 hours. Traveling 120 kilometers, how many kilometers per hour is the truck? (solution with equation)
甲乙两地相距598千米，一列客车从甲地开往乙地，一列货车从乙地开往甲地，客车先开2小时后，货车才出发，货车开2小时与客车相遇，客车每小时行120千米，货车每小时多少千米？(用方程解答)
<gadget id="calculator">120 * 2</gadget>
<output>240</output>

<gadget id="calculator">598 - 240 - 240</gadget>
<output>118</output>

<gadget id="calculator">118 / 2</gadget>
<output>59</output>

<result>59</result>