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A$B

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Junior | Next Rank: 30 Posts
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A$B

by amsm25 » Tue Aug 30, 2011 8:25 am
If A$B=A+B if A>B,and if A$B=B-A if A<B,then which of the followings is the highest for [(1/x)$(1/y)]$[(1/y$(1/x)]?

a)x= 1/2 & y=1/3
b)x=1/3 & y=1/4
c)x=1/4 & y=1/5
d)x=1/5 & y=1/4
e)x=1/4 & y=1/2
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by snakedoc » Tue Aug 30, 2011 8:45 am
IMO D.

What is the Answer?
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by amsm25 » Tue Aug 30, 2011 8:54 am
Its D. But can you please explain how you arrived at the answer. My answer was A :(
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by snakedoc » Tue Aug 30, 2011 9:24 am
I just substituted the values given for each option.While calculating [(1/y$(1/x)] part,I calculated y$(1/x) and took a reciprocal and proceeded.
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by amsm25 » Tue Aug 30, 2011 9:32 am
Can you please work out and explain. Would really appreciate.
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by amsm25 » Tue Aug 30, 2011 1:05 pm
hey thank you. My bad. I complicated the problem. Thanks for your help
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