Symbiosis National Aptitude Test SNAP 2014 Paper

Question : 28 of 150

Marks: +1, -0

One litre of water is evaporated from 6 litres of a solution containing 5% salt. The percentage of salt in the remaining solution is

$4 4/9%$
$5 5/7%$
5%
6%

Validate

Solution:

Quantity of salt = 5% of 6l = 300 ml
Quantity of water = 6000 ml – 300 ml = 5700 ml
Quantity of water left after evaporation
= (5700 – 100) ml = 4700 ml
% of salt =

{300 \ml}/{(4700+300) \ml}×100

= 6%

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