高中數學集合問題 - 搭公車
By Anthony
at 2012-07-03T00:00
at 2012-07-03T00:00
Table of Contents
已知七賢國小每18個學生中有12個搭公車上學,每15個學生中有9個走路上學,全部學生中有160個搭公車上學。請問不是走路上學的學生有幾人?
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搭公車
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By Erin
at 2012-07-05T12:11
at 2012-07-05T12:11
By Odelette
at 2012-07-04T23:34
at 2012-07-04T23:34
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