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# If W,X,Y and Z are integers such that W/X and Y/Z are

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If W,X,Y and Z are integers such that W/X and Y/Z are [#permalink]  08 Apr 2009, 19:20
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If W,X,Y and Z are integers such that W/X and Y/Z are integers, is W/X +Y/Z odd..?
1) WX+YZ is ODD
2) WZ+XY is odd.

DS Q....pl tell how to proceed with easier method.
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Re: ds prep.. <easy> [#permalink]  09 Apr 2009, 02:00
My ans is B.

St 2 says WZ+XY is odd.
As we know, W/X and Y/Z are integers
hence, W/X +Y/Z is an integer
W/X +Y/Z=(WZ+XY)/XY,....
if St 2 is right then, W/X +Y/Z=(an odd no)/XY.
An odd no can only be divided by an odd no and will result in an odd no. That means XY is also odd and (WZ+XY)/XY is also an odd no.

St 1 gives many conditions, so nothing can be said using this statement.

What is the OA?
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Re: ds prep.. <easy> [#permalink]  13 Apr 2009, 18:46
Agree with Abhishek's approach

Ans should be B.
Re: ds prep.. <easy>   [#permalink] 13 Apr 2009, 18:46
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