Question
The mass of Fabian is 52 of Archie's mass. Archie's mass is 30 kg. Japheth is 20 kg lighter than Fabian. What is the mass of Japheth?
3 m

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The mass of Fabian is 52 of Archie's mass. Archie's mass is 30 kg. Japheth is 20 kg lighter than Fabian. What is the mass of Japheth?