[計量] If a train is moving at a speed ...
在印網2/19號的機經上看來的,不太知道是什麼意思 >.<
4. If a train is moving at a speed of 'x/6'miles per 'y'sec, then what is the
speed in minutes when moving at 'Z'miles?
看不太懂什麼叫"when moving at 'Z'miles"
希望有版友幫忙解惑, 感謝!!
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