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Mathematics, 29.10.2019 07:31 Wolfzbayne
There are 20 children at a library. six of the children have an average age of 5 years. the remaining children have an average age of 8 years. what is the average age of the children at the library?
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There are 20 children at a library. six of the children have an average age of 5 years. the remainin...
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