Brett is right! If the class has 10 girls and 10 boys... then 80% of girls would be 8 girls of the 10. 70% of the boys is 7 of the 10. Then add them together and you get 15. Since there is 10 girls and 10 boys, there is 20 in all. 25% is 5 students of the class, 50% is 10 students of the class. 75% is 15 students from the class. Making Brett right.
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Brett is right! If the class has 10 girls and 10 boys... then 80% of girls would be 8 girls of the 10. 70% of the boys is 7 of the 10. Then add them together and you get 15. Since there is 10 girls and 10 boys, there is 20 in all. 25% is 5 students of the class, 50% is 10 students of the class. 75% is 15 students from the class. Making Brett right.
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