There is NO missing dollar as the problem is stated.
There is no logical reason why the riddle arithmetic should work out to $30.
The riddle arithmetic, by focusing on what each guy's net payment was, loses
track of the original incorrect total of $30, so the fact that the total comes
to $1 less than than $30 is just a tease. If you are going to ignore the $3
returned to the guys (which is really a hidden reference to the original $30
total) then you must also ignore the 'missing' $1 (which is really just the
returned $3 divided by three algebraicly ) which is also a reference to the
original $30 total. Here is the key: The original $30 is all three payments
combined and the missing dollar is the returned amount divided by three. Its
just algebraic head games. If you are going to net things out, then the $30
total 'becomes' a $29 total.
The important things to realize are :
The diners parted with $30.
The store has +$25 in the register.
The delivery kid has +$2 bucks in his pocket.
And the diners got +$3 bucks back.
And that adds up to original $30 total.
What they ended up paying for the pizza is irrelevant to the original $30
total, at least using arithmetic.
Obligatory Dak content:
My '00 4.7L electric fan ONLY comes on when the AC is on. I've let the engine
get up to 210F with AC off and it still doesn't come on. I thought these
things were supposed to come on at stop signs etc to relieve the engine driven
fan? Anyone else with a similar situation? I'm calling the dealer today; will
let know what I find.
Thanks,
Marty
'00 4.7L CC
> and now, something completely different.......
> ------------------------------------------------------------
> Here's a real stumper!
> Three guys in a hotel call room service and order two large pizzas. The
> delivery boy brings them up with a bill for exactly $30.00. Each guy gives
> him a $10.00 bill, and he leaves. That's fact!
> When he hands the $30.00 to the cashier, he is told a mistake was made. The
> bill was only $25.00, not $30.00. The cashier gives the delivery boy five
> $1.00 bills and tells him to take it back to the 3 guys who ordered the
> pizza. That's fact!
> On the way back to their room, the delivery boy has a thought... these guys
> did not give him a tip. He figures that since there is no way to split $5.00
> evenly three ways anyhow, he will keep two dollars for himself and give them
> back three dollars. OK! So far so good!
> He knocks on the door and one fellow answers. He explains about a mix up in
> the bill, and hands he guy the three dollars, then departs with his
> two-dollar tip in his pocket.
> Now the fun begins!
> Remember $30-$25=$5 Right? $5-$3=$2 Right?
> So what's the problem? All is well, right?
> Not quite. Answer this:
> Each of the three guys originally gave $10.00 each. They each got back $1.00
> in change.
> That means they paid $9.00 each, which times three is $27.00. The delivery
> boy kept $2.00 for a tip.
> $27.00 plus $2.00 equals $29.00.
> Where the heck is the other dollar ?????????
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