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Home Aptitude Alligation or Mixture Comments

  • Question
  • 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.


  • Options
  • A. 1 : 3
  • B. 2 : 3
  • C. 3 : 4
  • D. 4 : 5

  • Correct Answer
  • 2 : 3 

    Explanation
    By the rule of alligation:

    Cost of 1 kg of 1st kind Cost of 1 kg of 2nd kind
    720 p Mean Price
    630 p
    570 p
    60 90

    ∴ Required ratio = 60 : 90 = 2 : 3.


    Alligation or Mixture problems


    Search Results


    • 1. 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:

    • Options
    • A. 4%
    • B. 6¼%
    • C. 20%
    • D. 25%
    • Discuss
    • 2. 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?

    • Options
    • A. 26.34 litres
    • B. 27.36 litres
    • C. 28 litres
    • D. 29.16 litres
    • Discuss
    • 3. 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:

    • Options
    • A. Rs. 169.50
    • B. Rs. 170
    • C. Rs. 175.50
    • D. Rs. 180
    • Discuss
    • 4. 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?

    • Options
    • A. 3 : 7
    • B. 5 : 7
    • C. 7 : 3
    • D. 7 : 5
    • Discuss
    • 5. 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?

    • Options
    • A. 4 litres, 8 litres
    • B. 6 litres, 6 litres
    • C. 5 litres, 7 litres
    • D. 7 litres, 5 litres
    • Discuss
    • 6. 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?

    • Options
    • A. 36 kg
    • B. 42 kg
    • C. 54 kg
    • D. 63 kg
    • Discuss
    • 7. 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%?

    • Options
    • A. 3 : 2
    • B. 3 : 4
    • C. 3 : 5
    • D. 4 : 5
    • Discuss
    • 8. 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:

    • Options
    • A.
      1
      3
    • B.
      2
      3
    • C.
      2
      5
    • D.
      3
      5
    • Discuss
    • 9. 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?

    • Options
    • A.
      1
      3
    • B.
      1
      4
    • C.
      1
      5
    • D.
      1
      7
    • Discuss
    • 10. In what ratio must water be mixed with milk to gain 16⅔% on selling the mixture at cost price?

    • Options
    • A. 1 : 6
    • B. 6 : 1
    • C. 2 : 3
    • D. 4 : 3
    • Discuss


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