Two trucks A and B depart from City A at the same time and drive to City B at 60 kilometers per hour, which is (3/4) the speed of truck B. How many kilometers will the distance between the two trucks be in 2 hours? (calculated in two ways)
甲乙两辆货车同时从甲城出发，开往乙城甲货车每小时行60千米，是乙货车速度的(3/4)，2小时后两车相距多少千米？(用两种方法计算)
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">80 * (1/4) * 2</gadget>
<output>40</output>

<result>40</result>