On a straight road, Xiao Ming and Xiao Gang start from A and B, which are 5 kilometers apart, at the same time. Xiao Ming travels 200 meters per minute, and Xiao Gang travels 300 meters per minute. How long did it take before the two were 500 meters apart? (What are the possibilities, please draw a picture)
在一条笔直的公路上，小明和小刚骑车同时从相距5千米的A、B两地出发，小明每分钟行200米，小刚每分钟行300米．多长时间后，两人相距500米？(有哪些可能，请画图表示)
<gadget id="calculator">5 * 1_000</gadget>
<output>5_000</output>

<gadget id="calculator">500 + 5_000</gadget>
<output>5_500</output>

<gadget id="calculator">300 + 200</gadget>
<output>500</output>

<gadget id="calculator">5_500 / 500</gadget>
<output>11</output>

<result>11</result>