How old is Ravi right now? I. Ravi's current age is half that of his father. II. Ravi's age will be 6:11 when compared to his father's age after 5 years. III. Ravi is a year and a half younger than his older brother.
A. I and II only
B. II and III only
C. I and III only
D. All I, II and III
Answer:A
How old is Ravi right now? I. Ravi's current age is half that of his father. II. Ravi's age will be 6:11 when compared to his father's age after 5 years. III. Ravi is a year and a half younger than his older brother.
A. I and II only B. II and III only C. I and III only D. All I, II and III
Explanation: I. Assume Ravi is currently x years old. Then his father's current age is equal to 2x years. II. Ravi's age/age Father's = 6/11 after 5 years. III. Ravi is the younger of the two brothers. We obtain x + 5/2x + 5 = 6/11 from I and II. This yields x, which is the solution. As a result, the solution is given by combining I and II. III is obviously superfluous.