Mathematics, 26.12.2020 19:40 Gattuso

There are 3 fourth grade clases with a total of 90 scholars. 2/5 of the scholars have a sister. 1/2 of the scholars have a brother. How many scholars have a sisters?

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There are 3 fourth grade clases with a total of 90 scholars. 2/5 of the scholars have a sister. 1/2...

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