H _ S
Y _ _ N G _ R
B R _ T H _ R
W _ S
6 .
L _ T
H _ S
_ G _
B _
X ,
D _ M P L _ ' S
_ G _
B _
Y ,
_ N D
H _ S
F _ T H _ R ' S
_ G _
B _
Z .
T H _ N
Z = 3 Y ,
Z = X 2 ,
Y = 2 X .
S _
6 X = X 2
_ N D
X = 6 Clue
HIS YOUNGER BROTHER WAS 6. LET HIS AGE BE X, DIMPLE'S AGE BE Y, AND HIS FATHER'S AGE BE Z. THEN Z=3Y, Z=X2, Y=2X. SO 6X=X2 AND X=6 HE IS 16 YEARS OLD. WHEN I WAS 4 YEARS OLD, MY BROTHER WAS 2 YEARS OLD (HALF MY AGE), SO MY BROTHER IS 2 YEARS YOUNGER THAN ME. WHEN I AM 18 YEARS OLD, MY BROTHER WILL BE 16 YEARS OLD AS HE IS 2 YEARS YOUNGER THAN ME 104 POLES. THE FOUR CORNER POLES ARE COMMON TO BOTH SIDES, SO WE HAVE: 25 POLES X 4 SIDES + 4 CORNER POLES = 104 POLES 18 YEARS OLD. LET MY AGE BE X YEARS NOW. MY AGE AFTER 3 YEARS IS (X+3). MY AGE 3 YEARS AGO IS (X-3). SO, NOW WE CAN COME UP WITH AN EQUATION FOR X: X=3(X+3)-3(X-3) SOLVING FOR X WILL GIVE 18