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mathematical problem in the chess club


Hard math puzzle,Brain teaser


How much money was raised in the fund?

Read it please and try to solve it 


Chess club has 500 members. some old and other new ones who subscribed  last year.
Organize an event, where each old member pays 20 € and each new member 14 €.
At the event all the new members came but only 70% of the old members came
How much money was raised in the fund of the chess club by this event.

 Test of mathematical reasoning



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