Math Is Fun Forum

roel

Member

Registered: 2006-07-22

Posts: 48

tricky problem..

this problem seems to be a little tricky for me.. I don't know if you  know this problem.. I will just share it..

You borrowed $50 from A and $50 from B..
When you entered a store, you saw and bought a pants.
The cahsier gave you $3.
you gave the $1 to A and $1 to be..
How much do you need to pay now to A and B if you already paid them $1 each?

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: tricky problem..

There's probably something I'm missing here, but isn't the answer just $49 each?

You borrowed $50 from A and gave $1 back, so you still owe him $49. Same applies to B.

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Why did the vector cross the road?
It wanted to be normal.

Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Re: tricky problem..

Yes, I think there is something missing. Something to do with the $3 given by the cashier.

I♥BLACK☻MELONS

Member

Registered: 2006-11-21

Posts: 8

Re: tricky problem..

did you consider a calculator ?

Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Re: tricky problem..

A calculator may not be the correct tool for a problem like this. Sometimes logical problems need logical thinking.

roel

Member

Registered: 2006-07-22

Posts: 48

Re: tricky problem..

Assume the value is expressed in $..

let's say, it's like this... you, A, B, and D are confined in a room and then, the only money in that room is only 100.

A=50
B=50
a total of 100

you borrowed 50 from A and 50 from B.. therefore, all the money in that room is all in your hands..

say, you decided that you only need 97... thus, you have 3 left which you must return to A and B.
Instead of returning the entire 3, you only gave 1 to A, and 1 to B. So, there is only 1 left in your hands..

A=50-1=49
A=50-1=49

So you owe now A and B 98, and you only have $1 in your hands. where is the other 1$ which will complete the $100?

I don't think there is a need to use a calculator since this is just a matter of simple addition and subtraction..

Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Re: tricky problem..

Now, when you say '$1' can this be in coins or just paper money?

roel

Member

Registered: 2006-07-22

Posts: 48

Re: tricky problem..

Now, when you say '$1' can this be in coins or just paper money?

let's say, all are 1$ bills...