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In Grade 7, there are 2 sections. the first section has 35 students with a ratio of 7:5 (boys:girls), while the second section has 24 students with a ratio of 4:6 (boys:girls).
1. How many girls are there in second section?
2. How many boys are there in first section?
3. Find the total number of boys of the two sections. If it has a ratio of 3:5 (transferee:old), how many students that are transferee?
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