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35.05% of 200.05 – 20.15% of 99.99 × 3.02 = ? => ? = 35% of 200 – 20% of 100 × 3 => ? = 70 – 20 × 3 => ? = 70 – 60 = 10
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A group of students consists of 25 boys and the rest are girls. The average marks scored by boys is 72, and the average marks scored by girls is 84. If ...
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