Question
The total mass of a cat, a dog and a rabbit is 9.8 kg. The dog is 0.4 kg heavier than the cat. The rabbit is 4 times as heavy as the dog. Find the mass of the rabbit.
4 m

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The total mass of a cat, a dog and a rabbit is 9.8 kg. The dog is 0.4 kg heavier than the cat. The rabbit is 4 times as heavy as the dog. Find the mass of the rabbit.