60-70%,30-40%,20-40% are subjective


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送交者: Enlighten 于 2007-11-27, 11:08:43:

回答: Where did 60-70%,30-40%,20-40%,10% come from? 由 Wood 于 2007-11-27, 11:04:42:

10% is derived from 30-40% x 20-40%.






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