Alligation and mixture question and answers for bank and ssc exams

Alligation and mixture question and answers for Competition Exams:

16. A jar full of whisky contains 40% alcohol. A part of this whisky is replaced by another containing 19% alcohol and now the percentage of alcohol was found to be 26%. The quantity of whisky replaced is:

(A)

(B) 

(C) 

(D) 

17. 8 litres are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of the water is 16 : 65. How much wine did the cask hold originally?

(A) 17 litres

(B) 24 litres

(C) 36 litres

(D) 48 litres

18. A vessel is filled with liquid, 3 parts of which are water and 5 parts syrups. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?

(A) 

(B) 

(C) 

(D) 

19. Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.

(A) 4 : 5

(B) 2: 3

(C) 4 : 3

(D) 3 : 1

20. In what ratio must water be mixed with milk costing Rs. 12 per litre to obtain a mixture worth of Rs. 8 per litre?

(A) 1 : 2

(B) 2 : 1

(C) 2 : 3

(D) 3 : 2

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