A truck delivers goods from City A to City B. It takes 3 hours to go uphill and 2 hours to go downhill. The distance between A and B is 355 kilometers. How many kilometers per hour does the truck travel on average?
一辆货车从甲城到乙城送货，上坡用3小时，下坡用2小时，甲乙两城相距355千米．这辆货车平均每小时行多少千米？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">355 / 5</gadget>
<output>71</output>

<result>71</result>