A primary student planned to spend $280 to purchase 45 pencils for Swimming
Festival 2007. There are three type of pencil available in the book store, which costs $3, $4 and $7. How many of each type of pencil should be purchased?
[Use Gauss-Jordan elimination method].
Maths
2007-11-15 12:11 am
回答 (1)
2007-11-15 12:29 am
✔ 最佳答案
Sorry, I don't know what is Guass-Jordon method, but one of the answers will be 5X$3 + 5X$4 + 35X$7
收錄日期: 2021-04-13 14:57:56
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