Mathematical puzzle!

[Globalti]

Three blokes check into a hotel room. The price is £30 so they pay £10 each. After they've gone upstairs the manager realises there's a special on and the price should be £25 so he gives the bellboy a fiver and sends him up to hand it back. The bellboy can't think how to share £5 between three blokes so he pockets £2 and gives them back £1 each.

Each bloke has therefore spent £9 - and three times £9 is £27. The bellboy kept £2 so where did the extra £1 go?

 

[Noodley]

When I were a lad that was called arithmetic not mathematics!


And I do know....but would be interested to see how this goes!

 

[simon_adams_uk]

HOTEL OWNER:
Given £30 by guests
Gives £5 to Bell Boy
-> NET +£25

BELL BOY:
Given £5 by Owner
Gives 3x£1 (£3) to Guests
-> NET +£2

GUESTS:
Give £30 to Owner
Given £3 (£1 x3) by Bell Boy
-> NET -£27 (£10 - £1 each)

OVERALL:
Owner + Bell Boy + Guests
£25 + £2 + (-)£27 = £0

There is no money lost. Is that right??

 

[Tim Bennet.]

You're getting us to focus on the wrong numbers you scally wag.

As soon as the manager makes the 5 quid rebate, the price paid is £25, so the bell boy then adds his costs to this (2 quid) so making the total price £27.

 

[jonathan ellis]

If your cycling along at 10mph how fast is the top of your tyre going and how fast is the bottom going? relative to an observer sitting on the kerb

 

[marinyork]

When I were a lad that was called arithmetic not mathematics!


And I do know....but would be interested to see how this goes!

Sums!

 

[Melvil]

Oh maths...in secondary school we had a student teacher for a couple of lessons - he was going on about the square root of -1, which apparently may or may not exist. Anyway, he said back in uni he and his classmates had a big debate about the proper notation and form of the above. 'A mass debate, sir?' asked the class wag. 'Yes, of course,' the maths teacher replied, totally oblivious and then confused as the entire class wet themselves.

 

[Andy in Sig]

If your cycling along at 10mph how fast is the top of your tyre going and how fast is the bottom going? relative to an observer sitting on the kerb

They're both going the same: it's just a circle moving past him at 10 mph. Unless of course you mean that the bottom of the tyre is apparently going backwards and the top is apparently going forwards at 10 mph plus minus the circular velocity or whatever. Now my head is hurting.

 

[TheDoctor]

Square root of -1 is dead handy for manipulation of vector quantities...

 

[marinyork]

Complex Numbers were probably one of the greatest discoveries ever, after irrational numbers.

 

[Noodley]

Complex Numbers were probably one of the greatest discoveries ever, after irrational numbers.

Meat encased in pastry (aka the pie) is THE great discovery

 

[rich p]

Meat encased in pastry (aka the pie) is THE great discovery

Was it Pythagoras who ate all the Pi's or was it Archimedes who displaced so much water. Just a hypoteneusehesis

 

[jonesy]

I can't be done with working out the figures, but relative to the stationary observer, or relative to the ground (which is the same) the bottom of the tyre doesn't move.

Picture the tracks on a tank. The section touching the ground never moves.

Now picture the tank on a treadmill...!

 

[Rhythm Thief]

... oh, bloody hell.

 

[Speicher]

A man goes into a shop and asks for the price of a particular item. The shopkeeper explains that, of-course, it depends on the number of items involved.

67 says the man, £10 says the shopkeeper

Sorry says the man, it should be 167, £15 then says the shopkeeper.

What was the man trying to buy?