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1000 PS

presently we are in alpha stage , incase of typos please report at http://thousandps.blogspot.com/2009/11/bugs.html. we would be uploading all the 1000 Questions soon .

Thursday, November 19, 2009

PS 119

How many liters of pure alcohol must be added to a 100-liter solution that is 20 percent alcohol in order to produce a solution that is 25 percent alcohol?
(A) 7/2
(B) 5
(C) 20/3
(D) 8
(E) 39/4

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