Question
The total mass of Fred and George is 51.8 kg. The total mass of George and Riordan is 57.6 kg. If the total mass of Fred and Riordan is 53 kg, find the mass of Riordan.
4 m

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The total mass of Fred and George is 51.8 kg. The total mass of George and Riordan is 57.6 kg. If the total mass of Fred and Riordan is 53 kg, find the mass of Riordan.