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ConradCHESS .. raft .. logic .. IM Conrad Goodman

If a raft floats with 3/5 of its weight above water,
what is the ratio of the rafts submerged weight to its exposed weight?
3:8,   2:5,   3:5,   2:3   or 5:3 ?

Congratulations to these solvers as of
Brian Foote, Albert Frank, Dave Gill, Joshua Green, Lance Co, LW Luk,
Eduardo Mayer, Glenn McCorkle, Silviu Nenciulescu, Valmai Osborn,
Matthew Robinson, Steve Steppe, Luc Vingerhoets, Jay Wilkins,
Frank Womack and Brian Wood,

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