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Manager
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Empty Jar [#permalink] New post 29 Apr 2011, 00:50
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A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (03:30) correct 0% (00:00) wrong based on 1 sessions
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Re: Empty Jar [#permalink] New post 29 Apr 2011, 05:21
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x/4 = y/3

=> y < x

So x/4 + 1/3(3x/4) = x/2

Answer - C
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Re: Empty Jar [#permalink] New post 29 Apr 2011, 05:44
Let J be the container of water poured to smaller and bigger jar
Let L be the bigger jar

L/4 = J/2 (the larger is filled to 1/4 its capacity by the same amoun as the smaller jar)
2(L/4)=J (combine the water to the larger jar)
L/2 = J (the larger jar is filled to its half capacity)

Answer is 1/2

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Re: Empty Jar [#permalink] New post 29 Apr 2011, 07:50
The easiest way to approach this one is to combine 1/4 and 1/4 (or 1/3 and 1/3). We only need to know which cup is the bigger one. The cup which is 1/4 filled is the bigger one.
So:
We know that EQUAL ammount is poured into the two jars. If you add water into the first jar and it is 1/4 filled, and then once again the same ammount (1/4 of the jar) you will get the final result.
Or:
1/4 + 1/4 = 1/2
Re: Empty Jar   [#permalink] 29 Apr 2011, 07:50
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