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Aptitude - Alligation or Mixture

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  • General Questions
"The secret to creativity is knowing how to hide your sources."
- Albert Einstein
1. 

A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup. 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.
1
3
B.
1
4
C.
1
5
D.
1
7

2. 

Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety in the ratio 1 : 1 : 2. If the mixture is worth Rs. 153 per kg, the price of the third variety per kg will be:

A. Rs. 169.50B. Rs. 170
C. Rs. 175.50D. Rs. 180

3. 

A can contains a mixture of two liquids A and B is the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?

A. 10B. 20
C. 21D. 25

4. 

A milk vendor has 2 cans of milk. The first contains 25% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the containers so as to get 12 litres of milk such that the ratio of water to milk is 3 : 5?

A. 4 litres, 8 litresB. 6 litres, 6 litres
C. 5 litres, 7 litresD. 7 litres, 5 litres

5. 

In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 kg?

A. 3 : 7B. 5 : 7
C. 7 : 3D. 7 : 5




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