Three guys in a hotel call room service and order two large Pizzas.
The Delivery boy brings them up a bill for exactly R30.
Each guy gives him a R10 note, and he leaves. That's fact!
When he hands the R30 to the cashier, he is told a mistake was made.
The bill was only R25 and not R30.
The cashier gives the delivery boy five R1 coins 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 the R5 evenly three ways anyhow, he will keep R2 for himself and give them back R3.
OK! So far so good!
He knocks on the door and one fellow answers.
He explains about the mix up in the bill, and hands the guy R3 and then departs with his R2 tip in his pocket.
Now the fun begins!
Remember R30 - R25 = R5 ----- Right?
and R5 - R3 = R2 ----- Right?
So what's the problem? All is well, right? Not quite.
Answer this ..... Each of the threee guys originally gave R10 each.
They each got back R1 in change. That means they paid R9 each, which times 3 is R27.
The delivery boy kept R2 for a tip.
R27 plus R2 equals R29.
Where in the world is the other R1?????????
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