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The ratio of girls to boys in a class is 5 ∶ 3. If the total capacity of the class was 48 and 16.67% girls were absent, find the number of girls present.A. 15B. 18C. 5D. 251. B2. C3. D4. A |
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Answer» Correct Answer - Option 3 : D Given: Ratio of girls to boys = 5 : 3 Total capacity of class = 48 Percentage of girls absent = 16.67% Calculation: Number of girls in the class = [5/(5 + 3)] × 48 ⇒ (5/8) × 48 ⇒ 30 Now, number of girls present = [1 - (16.67/100)] × 30 ⇒ [1 - (1/6)] × 30 ⇒ (5/6) × 30 ⇒ 25 ∴ 25 girls are present in the class. 16.67% = 100/600 = 1/6 |
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