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Let the ages of Raman and Chaman eight years ago were 4x years and 5x years respectively. So the present ages of Raman and Chaman are 4x + 8 years and 5x + 8 years respectively. According to question: (4x + 8 + 12)/(5x + 8 + 12) = 13/15 (4x + 20)/(5x + 20) = 13/15 60x + 300 = 65x + 260 5x = 40, x = 8 So the present ages of Raman and Chaman are 40 years and 48 years respectively. So the present average age of Raman and Chaman = (40 + 48)/4 = 44 years
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