推 a8923022:感謝大家幫忙 04/03 07:03
※ 引述《a8923022 (neil)》之銘言：
: 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?
: 可否幫忙解這題目
: 謝謝
$200 賣100件
$204 98
$208 96
.
.
.
X
(X-200)/4 <====求加幾次4元 可以知道少賣多少件
100-2*(x-200)/4 <=====這個算式算出賣多少件
X * (100-2*(X-200)/4) <===單價*件數 就是這週獲得多少收入....^^"
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