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Mathematics, 30.04.2021 17:20 ANONYMUSNESS8670
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Erika has a collection of 300 movies. 2/5 of these movies were made after 2010. 50% of the movies were made between 1990 and 2010. The rest were made before 1990.
How many movies of Erika's collection were made before 1990?
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Erika has a collection of 300 movies. 2/5 of these movies were made after...
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