Question
Data Interpretation & Logical Reasoning (DILR) Question on Data Sufficiency
In the following question consists of a question and two statements numbered I and II given below it. Decide whether the data provided in the statements are sufficient to answer the question.
Question: How old is Z now?
Statements:
I. Five years ago, the average of X and Y was 30 years.
II. With Z joining now, the average becomes 35 years.
A
I alone is sufficient while II alone not sufficient
B
II alone is sufficient while I alone is not sufficient
C
Neither I or II is sufficient
D
Both I and II are sufficient
Answer
Both I and II are sufficient
Explanation
Solution
The correct option is (D): Both I and II are sufficient