Question
The total mass of a rabbit, a dog and a cat is 9.7 kg. The dog is 0.3 kg heavier than the rabbit. The cat is 3 times as heavy as the dog. Find the mass of the cat.
4 m

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The total mass of a rabbit, a dog and a cat is 9.7 kg. The dog is 0.3 kg heavier than the rabbit. The cat is 3 times as heavy as the dog. Find the mass of the cat.