Ratio of the present ages of A and B is 4:5 respectively. After 6 years, ratio of their ages will be 5:6 respectively. C is four years younger than A and D is 2 years older than B, then find the average age of C and D.
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Ratio of the present ages of A and B is 4:5 respectively. After 6 years, ratio of their ages will be 5:6 respectively. C is four years younger than A and D is 2 years older than B, then find the average age of C and D.
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