百度作业网请高手帮忙解一道英文数学题
来源：学生作业帮 编辑：百度作业网作业帮 分类：英语作业 时间：2024/04/19 14:25:38
请高手帮忙解一道英文数学题
Two shops sell the same brand of chocolate at the same price . Today they both cut down its price. Shops A decreases the price by 30%, and increases by 30% after a week. Likewise, shop B decreases its price by 40%, and decreasesby 40% after a week. Are the prices of the chocolate at the two shops still the same after a week?
Two shops sell the same brand of chocolate at the same price . Today they both cut down its price. Shops A decreases the price by 30%, and increases by 30% after a week. Likewise, shop B decreases its price by 40%, and decreasesby 40% after a week. Are the prices of the chocolate at the two shops still the same after a week?
不一样,假设开始时价格为P,对于商店A,一周之后为P×0.7×（1+0.3）,而对于商店B,一周之后为P×0.6×﹙1+0.4﹚