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28 Sep 2021, 01:30
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There are two solutions, A and B of spirit and water. The ratio of spirit and water in solution A is 3:4 and 4:5 in solution B, if 28 litre of solution is taken from A and added to Solution B, what will be the final concentration of spirit in solution B.
(1) After the addition, water in solution B is 24 L more than spirit.
(2) Initial amount of solution A is 140 L
(1) After the addition, water in solution B is 24 L more than spirit.
(2) Initial amount of solution A is 140 L
28 Sep 2021, 07:48
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Bunuel
So, in that 28ltrs:
7x = 28; x = 4
12ltrs of spirit is there
16ltrs of water is there
In B, new concentration will be:
Spirit = 4x + 12
Water = 5x + 16
1)5x + 16 = 24 + 4x + 12
x = 20 - Sufficient to find final concentration.
2)Initial amount =140
But, we don't know the ratio in that 28L - Insufficient!
IMO A
28 Sep 2021, 23:22
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We don't really need to solve this
So lets assume spirit and water in solution B are 4x and 5x respectively
28L of solution A was added in ratio 3:4 which means 12L of spirit and 16L of water
Statement 1: Final volume diff is given in Solution B, which means 1 equation and 1 variable --> Solvable
Sufficient
Sufficient 2: We don't care about initial volume of Solution A. Insufficient\
Therefore option A is correct
So lets assume spirit and water in solution B are 4x and 5x respectively
28L of solution A was added in ratio 3:4 which means 12L of spirit and 16L of water
Statement 1: Final volume diff is given in Solution B, which means 1 equation and 1 variable --> Solvable
Sufficient
Sufficient 2: We don't care about initial volume of Solution A. Insufficient\
Therefore option A is correct
Bunuel
