[機經] math jj 83
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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10/14 21:22, , 1F
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10/14 21:26, , 2F
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10/14 21:46, , 8F
10/14 21:46, 8F
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