Question

某商人將進(jìn)貨單價(jià)為8元的某種商品按10元一個銷售時，每天可賣出100個，現(xiàn)在他采用提高售價(jià)，減少進(jìn)貨量的辦法增加利潤，已知這種商品銷售單價(jià)每漲1元，銷售量就減少10個.問他將每個商品售價(jià)定為多 少元時，才能使每天的利潤最大？

Answer 1

14

解析:

設(shè)每個定價(jià)為元，利潤為元，

則每天銷售量為=，所以，

， ，                                                                                                                                                                                                                                                                                                                                                                                                                                                                

當(dāng)元時，最大.