∴ Mixture Problems Introduction/Examples

** 1) In what proportion must a man mix tea at Rs. 120 per kg and Rs. 144 per kg, so as to make a mixture worth Rs. 126 per kg?**

(A) 4 : 3

(B) 2 : 5

(C) 3 : 1

(D) 4 : 2

** 2) The percentage of water in 20 litres of adulterated milk is 10. The quantity of water to be added to it, to increase the percentage of water to 25% is:**

(A) 4 litres

(B) 6 litres

(C) 7 litres

(D) 8 litres

** 3) A certain variety of tea worthRs. 30.20 per kg is mixed with a lower quality of tea priced at Rs. 20.50 per kg so that the mixture is worth Rs. 25.40 per kg. The ratio of the two varieties of tea is:**

(A) 49 : 48

(B) 49 : 24

(C) 49 : 18

(D) 49 : 12

** 4) Six quarts of a 20% solution of alcohol in water are mixed with 4 quarts of a 60% solution of alcohol in water. The alcoholic strength of the mixture is**

(A) 40%

(B) 36%

(C) 33 1/3%

(D) 10%

** 5) In what proportion must a man mix milk at Rs. 11 a litre with milk at Rs. 6 a litre, so that the mixture may be worth Rs. 8 a litre?**

(A) 3 : 4

(B) 5 : 4

(C) 4 : 5

(D) 2 : 3

** 6) In what proportion must a man mix milk at Rs. 11 a litre with milk at Rs. 6 a litre, so that the mixture may be worth Rs. 8 a litre?**

(A) 2 : 3

(B) 5 : 4

(C) 3 : 5

(D) 5 : 7

** 7) A mixture of 70 litres of milk and water contains 10% water. How much water must be added to make water 12 1/2%.**

(A) 5

(B) 2

(C) 10

(D) 8

** 8) A jug contains three parts of pure milk and one part of water. How much of the mixture must be drawn and water substituted, in order that the resulting mixture may be half milk and half water?**

(A) 1/2 nd

(B) 1/5 th

(C) 1/3 rd

(D) 1/4 th