A比B大10%,而B比C少10%, 那麼, A與C兩數的大小關係為
A) A=C
B) A>C
C) A<C
D) 無法確定
請解釋 THX^^
幫幫手 THX^^ 急
2009-10-26 11:23 pm
回答 (1)
2009-10-27 4:37 am
✔ 最佳答案
A比B大10% => A = (1 + 10%)B = 1.1B ... (1)而B比C少10% => B = (1 - 10%)C = 0.9C ...(2)
Sub (2) into (1) => A = 1.1(0.9C) = 0.99C
Answer C: A < C
收錄日期: 2021-04-23 23:19:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091026000051KK01143