Question: The ratio of boys to girls in a math class is 5:8. How many girls are in the class if the total number of students in the class is 260? Think carefully first, then make a decision:
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If the ratio of boys to girls in the math class is 5:8, the total ratio of the number of boys and girls in the math class is 5 + 8 = 13. The fraction that represents the number of boys in the class is 5 / 13, and since there are 260 students in the class, the number of boys in the class is 5 / 13 * 260 = 100. The number of girls in the class is 260 - 100 = 160. So the answer is 160.
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