Question
On Thursday, Cathy, Esther, Irene and Nora spent a total of $100. On Friday, Cathy spent twice of what she spent on Thursday, Esther spent the same as what she spent on Thursday, Irene spent $17 less than what she spent on Thursday, and Nora spent $1 more than what she spent on Thursday. All of them spent an equal amount on Friday. How much did Cathy and Nora spend altogether on Thursday?
4 m

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On Thursday, Cathy, Esther, Irene and Nora spent a total of $100. On Friday, Cathy spent twice of what she spent on Thursday, Esther spent the same as what she spent on Thursday, Irene spent $17 less than what she spent on Thursday, and Nora spent $1 more than what she spent on Thursday. All of them spent an equal amount on Friday. How much did Cathy and Nora spend altogether on Thursday?