[求救] 漂白水ppm算法
請問10百分比濃度漂白水要泡兩公升水且500ppm需要的是20cc的漂白水!
現在若是變6百分比濃度也是要泡兩公升水且500ppm需要多少cc的漂白水呢?
還要算式…誰能幫我轉去相關看板的?!
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