Xiaoming and Xiaojun set off from places A and B respectively at the same time and head towards each other. If the two move forward at the original speed, they will meet at 4 o'clock; if both of them are 1 km/h faster than the original speed, they will meet at 3 o'clock. How many kilometers are there between A and B?
小明和小军分别从甲、乙两地同时出发，相向而行．若两人按原定速度前进，则4时相遇；若两人各自都比原定速度多1千米/时，则3时相遇．甲、乙两地相距多少千米？
<gadget id="calculator">3 * 1 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>