Wang Gang went to school from home, walking 60 meters per minute, and he could walk to school in 15 minutes. If you walk 75 meters per minute, how many minutes can you reach the school? (Solve with ratio)
王刚从家去学校，每分走60米，15分可以走到学校．如果每分走75米，几分可以走到学校？(用比例解)
<gadget id="calculator">60 * 15</gadget>
<output>900</output>

<gadget id="calculator">900 / 75</gadget>
<output>12</output>

<result>12</result>