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Emma has some $1, $2, $5 and $10 notes in her purse.
28% of the notes are $1 notes.
The number of $2 notes is `2/7` of the number of $1 notes.
The number of $5 notes is `2/3` of the combined number of $1 and $2 notes.
The remaining notes are $10 notes.
The number of $10 notes is 50 less than the combined number of all the other notes.
Find the total amount of money in Emma's purse.