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Q:
What number exceeds 25 by the same amount as it falls short of 49?
唔該好心人幫下我...PLZ~
F.1 Maths Question X1
2009-08-25 12:43 am
回答 (1)
2009-08-25 6:36 am
✔ 最佳答案
題意為：有那個數超出25的數量和低於49的數量相同。設該數為x
x – 25 = 49 – x
x – 25 + x = 49 – x + x
2x – 25 = 49
2x – 25 + 25 = 49 + 25
2x = 74
x = 74/2 = 37
該數為37
37比25多12又比49小12
收錄日期: 2021-04-23 23:20:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090824000051KK01489