Question

Five years ago from now, ratio of the age of 'X' to 'Y' was 3:k. Five years hence from now, ratio of age of 'X' to 'Z' will be 4:5. Four years ago from now, 'Z' was 26 years old. If the present age of 'Y' is 17 years, then find the value of (k² + 2).

A 3
B 6
C 11
D 18
E 27
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