The facts in this riddle are clear: There is an initial $30 charge. It should have been $25, so $5 must be returned and accounted for. $3 is given to the 3 friends; $2 is kept by the bellhop—there you have the $5. The trick to this riddle is that the addition and subtraction are done at the wrong times to misdirect your thinking—and quite successfully for most.
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