Re: [計量] A developer has land that ...
※ 引述《miomio0322 (冒煙的LEO)》之銘言：
: 又來請問大大了
: (感激)
: A developer has land that has x feet
: of lake frontage.
: The land is to be subdivided into lots, each of which
: is to have either 80 feet or lake frontage. If 1/9 of the
: lots are to have 80 feet of frontage each and the remaining 40
: lots are to have 100 feet of frontage each, what is tha value of x?
: 謝謝
假設x feet分成了L個lots，九分之一是80feet，其他是40lots
所以40lots=8/9 L 所以L=45 lots
總共是(1/9 L)x80+40x100
=5x80+40x100=4400 是這樣嗎 囧>
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