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Grandma sent Johnny some money for his birthday.Johnny spent

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Grandma sent Johnny some money for his birthday.Johnny spent all of it in five stores.In each store,he spent$1.00 more than half of what he had when he came in.How much did he get from grandma?
奶奶在约翰尼生日时给他一些钱,约翰尼在五家商店花光了这笔钱,在每一家店里,他花去了手里钱的一半多一元,那么他从奶奶那里得到多少钱?
由题意可知,在最后一家店花去最后2元(一半是一元,再加一元),倒数第二家时,手里有6元,第三家,14元,第二家,30元,第一家时,手里有62元,也就是数字加1再乘以2,就得出进前一家店时手里的钱了.答案62
分值太低,有点不值