A car travels from A to B at a speed of 36 km/h and takes 4 hours to reach B. It took 3 hours to return to A, what was the speed when returning?
一辆汽车从甲地开往乙地，去时的速度36千米/时，用了4小时到达乙地．返回时用了3小时回到甲地，返回时的速度是多少？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">36 * (4/3)</gadget>
<output>48</output>

<result>48</result>