A and B live in the same place, and A and B cycle at speeds of 300 m/min and 360 m/min respectively. It takes 15 minutes for B to ride a bicycle from his residence to school, how many minutes does it take for A to go from home to school?
甲、乙两人住在同一个地方，甲、乙骑车速度分别为300米/分、360米/分．乙从住处骑车到学校用时15分钟，求甲从家到学校用时几分钟？
<gadget id="calculator">15 / 300</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">360 * (1/20)</gadget>
<output>18</output>

<result>18</result>