Alligation and mixture question and answers for bank and ssc exams

Alligation and mixture question and answers for Competition Exams:

21. In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg he may gain 10%?

(A) 3 : 2

(B) 2 : 3

(C) 5 : 3

(D) 3 : 5

22. In what ratio must water be mixed with milk to gain  on selling the mixture at cost price?

(A) 1 : 6

(B) 3 : 2

(C) 2 : 2

(D) 4 : 8

23. Two vessels A and B contain spirit and water mixed in the ratio 5: 2 and 7: 6 respectively. Find the ration in which these mixtures be mixed to obtain a new mixture in vessel C containing spirit and water in the ratio 8: 5?

(A) 2 : 3

(B) 3 : 4

(C) 5 : 7

(D) 7 : 9

24. How much water must be added to 60 litres of milk at  litres for Rs. 20 so as to have mixture worth Rs.  a litre?

(A) 15 litres

(B) 16 litres

(C) 17 litres

(D) 18 litres

25. How many kgs. Of wheat costing Rs. 8 per kg must be mixed with 36 kg of rice costing Rs. 5.40 per kg so that 20% gain may be obtained by selling the mixture at Rs. 7.20 per kg?

(A) 10.8

(B) 12.5

(C) 13.6

(D) 14.7

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