Alligations or Mixture

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61 What is the ratio in which water should be mixed with a coke concentrate costing ₹ 15/litre to make a profit of 30% by selling the resultant drink at ₹ 18/litre?

A
12:1
B
11:1
C
1:10
D
1:12

62 A mixture of 40 litres of milk and water, contains 20% of water. How much water must be added to the above mixture to make the water 25% of the resultant mixture?

A
3 l
B
2.33 l
C
2.67 l
D
4 l

63 A container contains 40 litres of milk. From this container 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?

A
26 litres
B
29.16 litres
C
28 litres
D
28.2 litres

64 The cost of Type 1 material is ₹ 15 per kg and Type 2 material is ₹20 per kg. If both Type 1 and Type 2 are mixed in the ratio of 2 : 3, then what is the price per kg of the mixed variety of material?

A
₹ 19
B
₹ 16
C
₹ 18
D
₹ 17

65 How many kilograms of sugar costing ₹ 9 per kg must be mixed with 27 kg of sugar costing ₹ 7 per Kg so that there may be a gain of 10 % by selling the mixture at ₹ 9.24 per Kg ?

A
60 Kg
B
63 kg
C
58 Kg
D
56 Kg

66 In what ratio must rice at ₹7.10 be mixed with rice at ₹9.20 so that the mixture may be worth ₹8 per Kg?

A
5 : 4
B
2 : 1
C
3 : 2
D
4 : 3

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

A
4/3
B
$$\frac{3}{4}$$
C
3/2
D
$$\frac{2}{3}$$

68 In what ratio should rice at ₹9.30 per Kg be mixed with rice at ₹ 10.80 per Kg so that the mixture be worth ₹10 per Kg?

A
7 : 8
B
8 : 7
C
6 : 7
D
7 ; 6

69 In what ratio must tea at ₹62 per Kg be mixed with tea at ₹ 72 per Kg so that the mixture must be worth ₹ 64.50 per Kg?

A
1 : 2
B
2 : 1
C
3 : 1
D
1 : 3

70 Find the ratio in which rice at ₹ 7.20 a kg be mixed with rice at ₹ 5.70 a kg to produce a mixture worth ₹ 6.30 a kg:

A
4 : 3
B
3 : 4
C
2 : 3
D
3 : 2