作者giyoshi (沐兰快快开门!!)
看板GMAT
标题Re: [问题]一题数学题目
时间Thu Apr 2 14:40:53 2009
※ 引述《a8923022 (neil)》之铭言：
: A clothing manufacturer has determined that she can sell 100 suits a week
: at a selling price of $200 each. For each rise of $4 in the selling price she
: will sell two less suits each week. If she sells the suit for X dollars each,
: how many dollar a week will she receive from sales of the suits?
: 可否帮忙解这题目
: 谢谢
$200 卖100件
$204 98
$208 96
.
.
.
X
(X-200)/4 <====求加几次4元 可以知道少卖多少件
100-2*(x-200)/4 <=====这个算式算出卖多少件
X * (100-2*(X-200)/4) <===单价*件数 就是这周获得多少收入....^^"
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1F：推 a8923022:感谢大家帮忙 04/03 07:03