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Mixtures and Alligations

Mixtures and Alligations: What is a mixture? Solved Exercises with Answers for Questions on Mixtures and Alligations

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Online Aptitude Questions with Answers on Mixtures and Alligations

Q6. **A dishonest milkman professes to sell his milk at cost price but he mixes it with water and thereby gains 25%. The percentage of water in the mixture is:**

  1.  4%
  2.  25/4%
  3.  20%
  4.  25%

Solution : 20%
Q7. **How many kilogram of sugar costing Rs. 9 per kg must be mixed with 27 kg of sugar costing Rs. 7 per kg so that there may be a gain of 10% by selling the mixture at Rs. 9.24 per kg?**

  1.  36 kg
  2.  42 kg
  3.  54 kg
  4.  63 kg

Solution : 63 kg
Q8. **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?**

  1.  26.34 litres
  2.  27.36 litres
  3.  28 litres
  4.  29.16 litres

Solution : 29.16 litres
Q9. **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:**

  1.  1/3
  2.  2/3
  3.  3/5
  4.  2/5

Solution : 2/3

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Q10. **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.**

  1.  1 : 3
  2.  2 : 3
  3.  3 : 4
  4.  4 : 5

Solution : 2 : 3
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