Mathematics, 19.06.2020 23:57 justachelseafan

The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11, while the number of 5th graders to that of the 6th graders was 13 to 9. By what percent did the number of 7th graders exceed that of the number of 5th and 6th graders taken together ?

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The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11, while the number of...