Question
A baby hippopotamus weighs 21 kg. A young hippopotamus is twice as heavy as a baby hippopotamus. An adult hippopotamus is five times as heavy as a young hippopotamus. Find the mass of the adult hippopotamus.
4 m

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A baby hippopotamus weighs 21 kg. A young hippopotamus is twice as heavy as a baby hippopotamus. An adult hippopotamus is five times as heavy as a young hippopotamus. Find the mass of the adult hippopotamus.