英语翻译The price of a pack of potato chips is increased by 20％.Simon decides to cut his monthly consumption by 20％.If there is a decrease of $4.8 in Simon's monthly expenditure o buying potato chips ,find his original monthly expenditure on buying potato chips.
问题描述：
英语翻译
The price of a pack of potato chips is increased by 20％.Simon decides to cut his monthly consumption by 20％.If there is a decrease of $4.8 in Simon's monthly expenditure o buying potato chips ,find his original monthly expenditure on buying potato chips.
答
假设原来chip一块一包，现在1.20一包。假设原来simon买x包，现在他买0.8x包。
原来花x块，现在花0.96块
0.04x=4.8
x=120
答
薯片价格涨了两成每包
西门欲每月少吃两成
故每月可减少四美元八美分的开支
问西门以前每月要消耗多少钱的薯片?