2.8 |
show us how you get it, plz 本贴由[salmonfish]最后编辑于:2007-11-9 16:20:14 |
is :) |
I guess by 假设他们的燃烧速度一样, it is supposed to mean that the candles burn evenly -- each candle burns at its own constant speed. |
(7-X)/7=2*(4-X)/4 |
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