The ratio of time taken by A and B to walk the same distance is 4:3. If A walks 2 minutes first and they arrive at the same time, how long will it take B to complete the journey?
甲、乙两人步行同一段路所用的时间比为4：3，若甲先走2分钟，结果两人同时到达，则乙走完全程所需时间为多少分钟．
<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>