The ratio of the number of boys to the number of girls at school is 4:5.
What fraction of the students are boys?
If there are 120 boys, how many students are there altogether?
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https://www.illustrativemathematics.org/content-standards/6/RP/A/tasks/496, accessed on 12/8/16, is licensed by Illustrative Mathematics (https://www.illustrativemathematics.org) under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
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