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Simple Function

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by MBA.Aspirant » Sat Jul 02, 2011 12:48 pm
If 9 $ 4 = 15 $ k, then k=

3
6
20/3
25/3
9

a $ b is an undefined function, so it could mean a/b, b/a, a-b/a...etc why does the OA consider it as a/b?

Thanks
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by winniethepooh » Sat Jul 02, 2011 4:45 pm
THE ANSWER SHOULD BE 20/3
WHAT HAS BEEN ASKED IN THE QUESTION IS:
THERE IS A RELATION SHIP BETWEEN 9 AND 4 AND THE SAME RELATIONSHIP EXISTS BETWEEN 15 AND SOME OTHER NUMBER. THE ONLY POSSIBLE RELATIONSHIP 9 AND 4 IS NUMBER 9 IS 20/3 TIMES 4.
HENCE, 20/3!
Last edited by winniethepooh on Sun Jul 03, 2011 2:56 am, edited 1 time in total.
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by MBA.Aspirant » Sat Jul 02, 2011 6:19 pm
Ok this problem reminds me of Groundhog Day...see the madness

If the function is a/b, then

9/4 = 15/k

k = 20/3


9/4 = 45/20

2.25 = 2.25

what if it was a-b/b

then 9-4/4 = 15-k/k

5/4 = 15-k/k

5k = 60 - 4k

k = 60/9 = 20/3

a-b/a

9-4/9= 15-k/15

5/9 = 15-k/15

75 = 135 - 9k

k= 20/3

it's a locked ratio
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by winniethepooh » Sat Jul 02, 2011 7:18 pm
what source?
I am not talking about the function, but about the relationship between the numbers.
The method doesn't matter as far as you get the answer right!
Look I think, that the question is about an operation and not the function you're talking about.
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by MBA.Aspirant » Sun Jul 03, 2011 1:16 am
Kaplan
function question
OA 20/3
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by winniethepooh » Sun Jul 03, 2011 2:49 am
In that case, my bad.
It should be 20/3, that gives 2.25.
error!
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by MBA.Aspirant » Sun Jul 03, 2011 3:13 am
no problem
yes
lol
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