數學問題！！HELP!?
2015-12-30 6:56 am
Alan has three types of coins :$1 coins,$2 coins and $5 coins .The number of $2 coins is 5 more than the number of $5 coins .The total value of Alan's coins is $325.How many $2 coins does he have?
回答 (1)
2015-12-31 11:41 am
✔ 最佳答案
$2 有 50枚,$5 有 45 枚...SOL
(2*50)+(45*5)
=100+225
=325
收錄日期: 2021-04-18 14:17:18
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https://hk.answers.yahoo.com/question/index?qid=20151229225614AA7yxN2