human
Janessa has a plan to give her brother Dexter his first collection of baseball cards. She currently has 4 cards in addition to the 13 that her father gave her. She ordered a collection of 36 cards from eBay. After inspecting the cards she found 4 cards are in bad shape and decides to throw them away. Janessa ended up giving Dexter 29 cards. How many cards did Janessa keep for herself?
assistant
How many cards does Janessa have? ** Janessa starts with 4 cards + 13 cards = <<4+13=17>>17 cards.
How many cards does Janessa have after the purchase? ** She adds 17 cards + 36 cards = <<17+36=53>>53 cards from the eBay purchase.
How many cards does Janessa throw away? ** Janessa decides to throw away 53 cards - 4 cards = <<53-4=49>>49 cards due to damage.
How many cards did Janessa keep for herself? ** After giving Dexter the present we know that Janessa kept 49 cards - 29 cards = <<49-29=20>>20 cards for herself.
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