Question

某商人将进货单价为8元的某种商品按10元一个销售时，每天可卖出100个，现在他采用提高售价，减少进货量的办法增加利润，已知这种商品销售单价每涨1元，销售量就减少10个.问他将每个商品售价定为多 少元时，才能使每天的利润最大？

Answer 1

14

解析:

设每个定价为元，利润为元，

则每天销售量为=，所以，

， ，                                                                                                                                                                                                                                                                                                                                                                                                                                                                

当元时，最大.