Question
Seven years ago, 'R' and 'C' had ages in a ratio of 4:3,
respectively. After seventeen years, the ratio of 'C' and 'R's ages will be 9:10, respectively. Calculate the difference in the ages of 'R' and 'C'.Solution
Let 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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