Problems on Ages - Arithmetic Aptitude Questions and Answers

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What is Ravi's present age?
I.	The present age of Ravi is half of that of his father.
II.	After 5 years, the ratio of Ravi's age to that of his father's age will be 6 : 11.
III.	Ravi is 5 years younger than his brother.

I and II only

II and III only

I and III only

All I, II and III

Even with all the three statements answer cannot be determined.

Answer : Option A

Explanation :

I. Let Ravi's present age be x years. Then, his father's present age = 2x years.

II. After 5 years, $\frac { \text{Ravi's age} } { \text{Father's age} }$ = $\frac { 6} { 11 }$

III. Ravi is younger than his brother.

From I and II, we get, $\frac {X+5 } { 2X+5 }$ = $\frac { 6} { 11 }$ This gives x, the answer