箱子裡有9顆橘子重5公斤62公克，裝3個橘子重2公斤254公克，箱子重多少公克?
回答 (2)
2020-11-25 1:05 pm
不能算，每個橙重量不同，就當你相同，設橙x，箱子y，9x+y=5.062，3x+y=2.254
2020-12-07 4:22 pm
Let 箱子 be X gram, and 橘子 be Y gram.
X + 9Y = 5062 ....(1)
X + 3Y =2254 ...(2)
(1) - (2) => 9Y - 3Y = 5062 - 2254
Y = 468 gram
X + 9*468 = 5062
X = 850 gram.
X + 9Y = 5062 ....(1)
X + 3Y =2254 ...(2)
(1) - (2) => 9Y - 3Y = 5062 - 2254
Y = 468 gram
X + 9*468 = 5062
X = 850 gram.
收錄日期: 2021-04-23 22:09:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20201125041230AAurNA1