Two passenger and freight vehicles leave from A and B oppositely at the same time. When they meet, the distance ratio between A and B is 4:3. After the meeting, the truck speeds up. As a result, the two vehicles arrive at their respective destinations at the same time. It is known that the speed of the trucks before the encounter is 36 kilometers per hour, what is the speed of the trucks after the encounter?
客货两车同时从A，B两地相对开出，相遇时甲乙两车路程比为4：3，相遇后货车加快速度，结果两车同时到达各自目的地．已知货车相遇前的速度是每小时36千米，相遇后每小时速度是多少千米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">48 / (3/4)</gadget>
<output>64</output>

<result>64</result>