Math Is Fun Forum
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#1 2013-05-17 23:41:54
A confusing money puzzle
A lady goes to a jewellery shop and chooses a necklace costing $200. She gives a $1000 rupee note to the shopkeeper. But the shopkeeper did not have changes, so he went to the next shop to change the $1000 note into a $800 note and $200 note. He gave the lady $800 and she happily went away.
After a while, the next shopkeeper came in rushing and informed that the $1000 rupee note was fake. So the jeweller had to give him back $1000.
How much loss did the jeweller suffer(considering the standard selling and cost price of the necklace to be same)?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
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#2 2013-05-19 03:27:28
- {7/3}
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Re: A confusing money puzzle
I think it's either 800 or 1000
There are 10 kinds of people in the world,people who understand binary and people who don't.
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#3 2013-05-19 03:43:30
Re: A confusing money puzzle
Why not 1200?
He lost the necklace of 200, he had to give back 1000
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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#4 2013-05-19 04:37:05
- {7/3}
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Re: A confusing money puzzle
Did the jeweler buy or made the necklace using $200 rupees?
There are 10 kinds of people in the world,people who understand binary and people who don't.
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#5 2013-05-19 05:38:52
Re: A confusing money puzzle
The jeweller already had a necklace costing 200
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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#6 2013-05-19 09:56:05
- anonimnystefy
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Re: A confusing money puzzle
Try drawing this. In the beginning, the lady had nothing (actually, she had a 1000, but it isn't worth anything), the first jeweller had a necklace and the second jeweller had 800$+200$. Then the first jeweller received the lady's 0, gave her a necklace and gave it to the second one receiving from him the 1000$. Now the lady has a necklace, the first jeweller has 800$+200$ and the third jeweller has nothing. The first jeweller then gives the lady 800$ and is left with 200$. Then he gives the first jeweller 1000$ after the scam had been discovered and is left with -800$. And at this point the story ends. Let's look at how much gain/loss everybody has. The lady had nothing and ends up with 800$+a necklace=1000$, so that's a 1000$ gain. The second jeweller has 1000$ in the beginning and has that much in the end so he has neither gained nor lost. The first jeweller, however, had a necklace worth 200$, but ended up with -800$, whoch would be a 1000$ loss. So the answer is 1000$.
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#7 2013-05-19 15:40:15
Re: A confusing money puzzle
Seems correct...
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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