Question

There are four friends in a group: A, B, C, and
D. What is the present average age of the friends? Statement I: The present age of D is one-third the age of A, and the present age of B is 4 years less than the age of
A. The average age of D and C is 16 years, and D is 24 years younger than
B. Statement II: Seven years ago, D was one-fifth the age of
A. The difference between the age of B and the age of D is the same as the difference between the age of A and the age of
C. The average age of C and B is 28 years.

The question consists of two statements numbered “I and II” given below it. You have to decide whether the data provided in the statements are sufficient to answer the question.
A The data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.
B The data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.
C The data either in statement I alone or in statement II alone are sufficient to answer the question.
D The data given in both statements I and II together are not sufficient to answer the question.
E The data in both statements I and II together are necessary to answer the question.
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