If Lucy would give Linda $5, Lucy would have the same amount of money as Linda. If Lucy originally had $20, how much money did Linda have at the beginning?
After giving $5, Lucy has $20 - $5 = $<<20-5=15>>15 left.
Since Linda has $15 after receiving $5, then she had $15 - $5 = $<<15-5=10>>10 at the beginning.
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