How old was X on 15 January 2017?
Statements:
1. X is 50 years older than his brother Y.
2. Y is 20 years younger than his mother.
1
2 alone is sufficient white 1 alone is not sufficient to answer the given question
2
Both 1 and 2 are sufficient to answer the given question.
3
1 alone is sufficient white 2 alone is not sufficient to answer the given question.
4
Neither 1 nor 2 is sufficient to answer the given question.