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Sink

by umaa » Mon Jan 12, 2009 7:48 pm
A sink contains exactly 12 liters of water. If water is drained from the sink until it holds exactly 6 liters of warer less that the quantity drained away, how many liters of water drained away?

A. 2

B. 3

C. 4.5

D. 6

E. 9
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by amitabhprasad » Mon Jan 12, 2009 7:59 pm
I am getting "E"
If x = quantity drained away
12-x = x-6
==> x = 9
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by pandeyvineet24 » Tue Jan 13, 2009 11:27 am
E should be

Let d be water drained away and h is water left in the bucket

d - h = 6
d + h = 12

solve for d which equals 9
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by umaa » Tue Jan 13, 2009 8:36 pm
OA is E. Thanks...
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by aroon7 » Tue Jan 13, 2009 9:09 pm
the amount of water in the sink should be a positive number and is equal to amount of water drained - 6
9 is the only number >6...
so E

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