The ratio of red and blue balls in a bag is 7 : 8. If 3 red balls are taken out and 6 blue balls added, the ratio becomes 3 : 5. What is the total number of balls initially?
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red ball=7
blue ball =8*6=48
3:5=8
48/8=6ans
blue ball =8*6=48
3:5=8
48/8=6ans
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