In the pack of plates, 1/3 plates are damaged, 2/3 plates are cracked and 1/3
of them are damaged and cracked. If 80 are not hampered, then what is the
number of total plates?
韓網答案是給240
可是我怎麼算都是360耶 ? @@ 驗算過也對呀
在360個盤子裡面 damaged的是120個, cracked的240個,既damaged又cracked的80個
所以沒損傷的就是 360 - (120+ 240 - 80) = 80
可以請教一下我這樣算是對的嗎 謝謝 ^^
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