Mixture Problems

9) A vessel is full of mixture of spirit and water in which there is 18% spirit, 8 litres are drawn off and the vessel is filled up with water. If he spirit is now 15% the quantity in the water is:
(A) 30 litres
(B) 48 litres
(C) 35 litres
(D) 45 litres

10) Two vessels contain milk and water mixed respectively in the ratio 3:1 and 5:3. Find the ratio in which these are to be mixed to get a nex mixture in the ratio of milk and water 2:1.
(A) 2 : 1
(B) 2 : 3
(C) 2 : 5
(D) 1 : 2

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