gre A car dealer who gives a customer a 20 percent discount on the list price of a car still realizes a net profit of 25 percent of cost.If the dealers' cost is $4800,what is the usual list price of the car?
问题描述：
gre
A car dealer who gives a customer a 20 percent discount on the list price of a car still realizes a net profit of 25 percent of cost.If the dealers' cost is $4800,what is the usual list price of the car?
答
actual price= net profit + cost = 1.25 * cost
usual price= actual price / 0.8
答
原价基础上让利20%还能赚到成本的25%,成本是4800,求原价.
设原价为x,则
(1-20%)*x = (1+25%)*4800
解得 x=7500
The usual list price of the car is $7500.