Old Problem Rises From The Grave!
Geminosity
:3 Join Date: 2003-09-08 Member: 20667Members
:3 Join Date: 2003-09-08 Member: 20667Members
in Off-Topic
<div class="IPBDescription">gah! my brain!!! ><</div> I think this was mentioned on the boards waaaaay back but couldn't find it.
Recently while at work I noticed an old puzzle that I remember but I can't work out.
Three girls went on a trip and along the way they stayed at a nice little hotel. When the bill came it was for the rather cheap price of £25 for all three of them. Each girl threw in a £10 to pay the bill.
When the bellboy returned with the change they took £1 each and left the remaining £2 as a tip.
Now... the total was £10 x 3 girls = £30
however, if we do the math with the story...
£10 spent - £1 taken from change = £9 per girl
3 girls x expenditure = £27
plus £2 tip left = £29!!!
Where'd the £1 go? I totally can't remember how this works!!! ><
Anyone shed some light on this and put my silly mind at ease?
Recently while at work I noticed an old puzzle that I remember but I can't work out.
Three girls went on a trip and along the way they stayed at a nice little hotel. When the bill came it was for the rather cheap price of £25 for all three of them. Each girl threw in a £10 to pay the bill.
When the bellboy returned with the change they took £1 each and left the remaining £2 as a tip.
Now... the total was £10 x 3 girls = £30
however, if we do the math with the story...
£10 spent - £1 taken from change = £9 per girl
3 girls x expenditure = £27
plus £2 tip left = £29!!!
Where'd the £1 go? I totally can't remember how this works!!! ><
Anyone shed some light on this and put my silly mind at ease?
Comments
<!--QuoteBegin--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> </td></tr><tr><td id='QUOTE'><!--QuoteEBegin-->plus £2 tip left = £29!!!<!--QuoteEnd--></td></tr></table><div class='postcolor'><!--QuoteEEnd-->
that's supposed to be MINUS £2, which would leave it at £25, which IS how much they SPENT on the hotel, before the tip which we just subtracted...
10+10+10=30
30-25=5
5-1-1-1=2
2-2=0
You have to have them pitch in first, then take away change.
thankies!!!
...I think ~blink~
3 girls x expenditure = £27
plus £2 tip left = £29!!!<!--QuoteEnd--></td></tr></table><div class='postcolor'><!--QuoteEEnd-->
I'll try to be a little more specific...
they're saying each girl spent £9, making the expenditure £27 total...
then they're saying PLUS £2 - that just isn't how it is...
they spent £27 total... £2 of that £27 was tip, so if you SUBTRACT the £2, you get £25, the cost of the room...
so it's £2 tip + £25 room + £3 returned to them = £30 starting moolah...
so basically you mean the cost was actually £25 (room) + £2 (tip) = £27 = 3 x £9
=D
waii! okies now I definitely get it! ~hugs disco~
oooh... wonder if I should send the answer in to the letters page it was in so I can look all smart and stuff? XD
(:
People think in different ways though. What can be an easy puzzle for someone even at a young age can be tricky for someone of a different mindset though they would equally find something else easy that the first found taxing. That's the fun part about people; we might be the same species but we're still individuals ^^
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I agree, people's individuality is what makes life great. I tried telling the police that, but they wouldn't listen.