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Start learning 50% faster. Sign in nowLet the ages of 'R' and 'C' seven years ago be 4a years and 3a years, respectively. So according to question: (4a + 7 + 17)/(3a + 7 + 17) = 10/9 36a + 216 = 30a + 240 6a = 24 a = 4 So, the difference between the ages of 'R' and 'C' = 4 years
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