How Long Is The Whale?

Riddle: The head of a whale is six feet long; his tail is as long as his head and half his body, and his body is half of his whole length. How long is the whale?

Answer: Forty-eight feet.

Source: https://www.riddles.com/518

The head of a whale is six feet long; his tail is as long as his head and half his body, and his body is half of his whole length. How long is the whale? — How long is the whale? by Anonymous v1.

Riddle: The head of a whale is six feet long; his tail is as long as his head and half his body, and his body is half of his whole length. How long is the whale? Answer: Forty-eight feet. — by Anonymous v2.