Question
On Thursday, Sabrina, Olivia, Shiyun and Diana spent a total of $134. On Friday, Sabrina spent twice of what she spent on Thursday, Olivia spent the same as what she spent on Thursday, Shiyun spent $15 less than what she spent on Thursday, and Diana spent $7 more than what she spent on Thursday. All of them spent an equal amount on Friday. How much did Sabrina and Diana spend altogether on Thursday?
4 m

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On Thursday, Sabrina, Olivia, Shiyun and Diana spent a total of $134. On Friday, Sabrina spent twice of what she spent on Thursday, Olivia spent the same as what she spent on Thursday, Shiyun spent $15 less than what she spent on Thursday, and Diana spent $7 more than what she spent on Thursday. All of them spent an equal amount on Friday. How much did Sabrina and Diana spend altogether on Thursday?