Imagine you are a cat on your birthday. You receive 6 balls of yarn from your uncle, 4 balls of yarn from your mother, 24 balls of yarn in all. There were only 4 people that gave you yarn, and the two that are not mentioned gave an equal amount. After your birthday is over, your mother demands that you put away 50% of all your yarn, however, after 1 month, you are allowed to take out 50% of what is left. However many balls of yarn are still put away?
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