Mathematics, 24.02.2021 18:20 batista68

Mr Porter collects books. He has room on his bookshelf for 6400 books. Every year he buys one book for every ten he already owns. He starts with a collection of 4000 books. How many years will it take until he needs to buy new shelves?

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Mr Porter collects books. He has room on his bookshelf for 6400 books. Every year he buys one book f...

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