The distance between A and B is 240 km. Two cars drove in opposite directions from two places at the same time. One car is traveling at 60 km/h and the other at 100 km/h. How long have they met?
甲乙两地相距240千米．两辆车同时从两地相向开出．一辆车时速60千米，另一辆100千米．请问他们多久相遇？
<gadget id="calculator">60 + 100</gadget>
<output>160</output>

<gadget id="calculator">240 / 160</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>