The distance between A and B is 760 km. A truck travels from A to B at 60 km per hour. After 1:00 a.m., a bus travels from City B to City A at 80 km per hour. How long does it take for the truck to meet the passenger car?
甲、乙两城相距760km，一辆货车从甲城开往乙城，每时行60km．1时后一辆客车从乙城开往甲城，每时行80km．货车开出几时后与客车相遇？
<gadget id="calculator">760 - 60</gadget>
<output>700</output>

<gadget id="calculator">60 + 80</gadget>
<output>140</output>

<gadget id="calculator">700 / 140</gadget>
<output>5</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<result>6</result>