Puzzle 49 - Bird and a tail

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 Solution : 

Head of the bird h = 9

Tail of the bird t = h + b/2 where b is size of body

Body of the bird b = h+t = h+h+b/2

Transferring b/2 to LHS, we have 

b/2 = 2h   =>  b = 4h = 4*9 = 36cm.

t = h+b/2 = 9+36/2 = 9+18 = 27 cm.

Size of the bird = h+t+b = 9+27 + 36 = 72cm.

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