Question
The total mass of Rael and Billy is 61.4 kg. The total mass of Billy and Japheth is 59.8 kg. If the total mass of Rael and Japheth is 66 kg, find the mass of Japheth.
4 m

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The total mass of Rael and Billy is 61.4 kg. The total mass of Billy and Japheth is 59.8 kg. If the total mass of Rael and Japheth is 66 kg, find the mass of Japheth.