Question
The total mass of a mouse, a puppy and a kitten is 9.8 kg. The puppy is 0.4 kg heavier than the mouse. The kitten is 4 times as heavy as the puppy. Find the mass of the kitten.
4 m

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The total mass of a mouse, a puppy and a kitten is 9.8 kg. The puppy is 0.4 kg heavier than the mouse. The kitten is 4 times as heavy as the puppy. Find the mass of the kitten.