作者bbb123 (bbb123)
看板GMAT
標題[機經] math jj 83
時間Wed Oct 14 21:00:13 2009
83.
Four extra-large sandwiches of exactly the same size were ordered
for m students, where m > 4. Three of the sandwiches were evenly
divided among the students. Since 4 students did not want any of
the fourth sandwich, it was evenly divided among the remaining students.
If Carol ate one piece from each of the four sandwiches, the amount
of sandwich that she ate would be what fraction of a whole extra-large
sandwich?
標準答案:(4M-12)/M(M-4)
原本jj解答:(3A/M)+[A/(M-4)] 結果再除以A
為什麼我怎嚜化簡都無法得到(4M-12)/M(M-4)
有人可以幫忙推一下嗎
謝謝!
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1F：推 weepwind:我算(M-3)/M(M-4) 10/14 21:22
2F：推 wonderfulsea:請問原PO的這個版本是從哪出來的?我沒看過>< 10/14 21:26
3F：→ bbb123:CD網站上 有一個考750的人分享的 我也去查過GWD的答案 10/14 21:30
4F：→ bbb123:就是上面那個答案 怪怪的說@@ 10/14 21:31
5F：推 weepwind:我知道了啦....英文看錯...它說佔"一個"大餅多少 10/14 21:43
6F：→ weepwind:所以不用除以4 10/14 21:43
7F：→ bbb123:可以幫忙寫個算式嗎? 謝謝! 10/14 21:44
8F：→ weepwind:(3/M)+1/(M-4)通分就得出答案 10/14 21:46