Building

E) oa please?

wrong!

OA is E

cheers
Andrew

IMO E


try n solve it with number line


A
---------A-----3--------S--------
cant tell before A and after S
so insuff


B
above A 9 and below B 9
here we dont know the difference so Insuff


A+B
it looks C is the answer but there is a catch
we dont know A/S who lives on higher floor
consider two drms

----6----A-----3--------S---6----

----9----S-----3--------A---9----

hence Insuff

Hope this helps

stop@800 wrote:IMO E


try n solve it with number line


A
---------A-----3--------S--------
cant tell before A and after S
so insuff


B
above A 9 and below B 9
here we dont know the difference so Insuff


A+B
it looks C is the answer but there is a catch
we dont know A/S who lives on higher floor
consider two drms

----6----A-----3--------S---6----

----9----S-----3--------A---9----

hence Insuff

Hope this helps

Somebody studied his OG book!

it looks C is the answer but there is a catch
we dont know A/S who lives on higher floor
consider two drms

----6----A-----3--------S---6----

----9----S-----3--------A---9----

hence Insuff

Hope this helps

Stop@800,

The diagram above; will it not contradict the fact that there are 9 stories above Alan's floor and 9 stories below Betty's floor

Should it not be

6---- B(S whatever))----3----A------6 which will be 15

9-----A------3-------B(S whatever)---------9 which will be 21

Hence E)

Hope I am not missing something here; feell free to jump in bud

cramya wrote:

it looks C is the answer but there is a catch
we dont know A/S who lives on higher floor
consider two drms

----6----A-----3--------S---6----

----9----S-----3--------A---9----

hence Insuff

Hope this helps

Stop@800,

The diagram above; will it not contradict the fact that there are 9 stories above Alan's floor and 9 stories below Betty's floor

Should it not be

6---- B(S whatever))----3----A------6 which will be 15

9-----A------3-------B(S whatever)---------9 which will be 21

I am sorry, But I could not find the point of error.

I think we both have drawn similar diagram.

Hence E)

Hope I am not missing something here; feell free to jump in bud

I am sorry, But I could not find the point of error.

I think we both have drawn similar diagram.

Never mind ; I was trying to saythat your A and S are interchanged ; the diagram is correct as far as the numbers go... Its no big deal since the concept underlying is the same....

acorra wrote:Alan and Betty live in a multi-story apartment building. How many stories does the building have?

1) There are 3 stories between those on which Alan and Betty live

2) There are 9 stories above Alan's floor and 9 stories below Betty's floor


Many thanks
Andrew

Andrew, think this problem as an ABSOLUTE value problem/

statement 1 means ABS (A-B) = 3

So start thinking about the OPTION E, before you start your solution.