A passenger car and a truck depart from A and B respectively in opposite directions at the same time. The speed of the truck is 40 kilometers per hour, and the speed of the passenger car is 60 kilometers per hour. After driving for 4.5 hours, there is still 10 kilometers to meet. How many kilometers are the distance between A and B?
一辆客车和一辆货车分别从甲、乙两地同时相向开出．货车的速度是40千米每小时，客车的速度是60千米每小时，行驶4.5小时后还差10千米相遇，甲、乙两地相距多少千米？
<gadget id="calculator">40 + 60</gadget>
<output>100</output>

<gadget id="calculator">100 * 4.5</gadget>
<output>450</output>

<gadget id="calculator">450 + 10</gadget>
<output>460</output>

<result>460</result>