Question

A vessel is full of a mixture of spirit and water. in which thete is 18%of spirit ,8litre arebdrawn off and the vedsel is filled up with water. if the spirit is now 15% how much maximum spirit does the vessel hold

Answer 1

Initial spirit percentage in mixture = 18%

When 8 litre of mixture is drawn from the vessel, percentage of spirit reduced to 15%

18% - 15% = 3%
hence, 8 litre of mixture contains 3% of spirit 

how many litre of mixture contains 18% of spirit?
18×8/3=48litre.