[EM] Approval strategy puzzle

[Joe Weinstein]

On Tues. eve., suitably enfeebled, I turned to Richard's Approval Strategy 
puzzle and argued basically as Mike suggests.  Voter #4 should vote both A 
and B if B has utility > Ub and vote just A if B has utility < Ub, where - 
if my arithmetic was correct -  Ub = (5/6)*100 = 83 1/3.

Joe Weinstein
Long Beach CA USA
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