How much Did Barry, Corine and Dale each lose?

Alpha owed $30,000 to Barry. Barry owed $20,000 to Corine, and Corine owed $10,000 to Dale. If Alpha absconded and everyone else refused to pay their debts. How much did each member of the group gain or lose?

Who owes whom what?

Answer: Alpha gained $30,000, and the three others lost $10,000 each.

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