Answers

2014-04-05T19:00:39+05:30
Vaibhavs age will be 5 after calculation

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2014-04-05T19:05:56+05:30
If his present age is x  then  x+15=4x
                                          15=4x-x
                                           15=3x
                                           15/3=x 
                                            5=x
   then his present age is 5.
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