Answers

2014-01-20T17:47:19+05:30
LET MOTHER BE X
LET FATHER BE Y
SO [X+Y]/2=23
X+Y=46
NOW LET YOU BE Z
SO   [X+Y+Z]/3=35
  X+Y+Z=105
SO Z=59
0
20 years so [x+y]/2-20=23 so x+y=86 now [x+y+z]/3=35 so your age is 19
sorry first i have not seen 20 years