Re: [計量] 數學問題
※ 引述《mandrake (冏rz)》之銘言：
: On week a certain truck rental lot had a total of 20
: trucks, all of which were on the lot Monday morning.
: If 50 percent of the trucks that were rented out
: during the week were returned to the lot on or
: before Saturday moring of that week, and if there
: were at least 12 trucks on the lot that Saturday
: morning, what is the greatest number of different
: trucks that could have been rented out during the week?
: ANS:16
: 光是題目就不懂
: 有好心人可以解釋一下嗎?
大意:
租車場有20輛車，租出去的車有一半會在星期六歸還
題目問說，如果星期六至少有12輛車的話，
至多有多少輛車曾經被租出去?
解:設最多x輛被租
0.5x+(20-x)>=12
x<=16
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◆ From: 140.109.40.60
※ 編輯: hongpiglet 來自: 140.109.40.60 (03/27 10:38)
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03/27 10:43, , 1F
03/27 10:43, 1F
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