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Ratio Proportion

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Ratio Proportion

by raunakrajan » Wed Jun 16, 2010 11:41 am
Solution Y is 30% liquid X and 70% water. If 2 Kg water evaporate from 8kg if the Solution Y and 2Kg of solution Y are added to the remaining 6Kg of liquid what percent of this new solution is Liquid X?
(A) 30%
(B) 33.33%
(C) 37 1/2 %
(D) 40%
(E) 50%
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by amising6 » Wed Jun 16, 2010 11:49 am
now let start with 8 kg of solution y
so liquid x=30%of 8 kg =2.4 kg
water=70 % of 8 kg=5.6 kg

now after this water remaining =5.6 -2=3.6 kg
liquid x remain umnchanged at 2.4 kgs
now 2 kg of solution is added so water added will be 70% of 2=1.4 kg
liquid x will be 30 % of 2 =0.6 kg
so present concentration
liquid x 2.4(initially)+0.6 newly added=3 kg
water= 3.6+1.4=5 kg
liquid x % in liquid y now is (3/8)*100= 75/2= 37 1/2 % i.e option c
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