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Home Aptitude Alligation or Mixture Comments

  • Question
  • The average age of 6 members of a family is 20 years. If the age of the servant is included, then the average age increase by 25%. What is the age (in years) of the servant?


  • Options
  • A. 30
  • B. 35
  • C. 50
  • D. 55

  • Correct Answer
  • 55 

    Explanation

    Ratio of milk and water = 2 : 1
    Quantity of milk = 60 X 2/3 = 40 litre
    Quantity of water = 20 litre
    To make ratio, 1: 2, we have to double the water that of milk
    So, water should be 80 litre.
    That means 80 ? 20 = 60 litre water to be added.

  • Tags: Bank Exams

    Alligation or Mixture problems


    Search Results


    • 1. In a mixture of 60 litres, the ratio of milk and water is 2:1. What amount of water must be added to make the ratio of milk and water as 1:2?

    • Options
    • A. 42 Litres
    • B. 56 Litres
    • C. 60 Litres
    • D. 77 Litres
    • Discuss
    • 2. From container A containing 54 liter of mixture of milk and water in ratio of 8 : 1 , 18 liter of the mixture is taken out and poured into container B in which ratio of milk to water is 3 : 1. If difference between total milk and total water in container B is 30 liter then find the quantity of initial mixture in container B.

    • Options
    • A. 30 Liter
    • B. 28 Liter
    • C. 32 Liter
    • D. 36 Liter
    • Discuss
    • 3. Price of 1 kg of sugar is increased by 30% and the increase is of Rs 48. What is the new price (in Rs) of the sugar per kg?

    • Options
    • A. 178
    • B. 160
    • C. 208
    • D. 216
    • Discuss
    • 4. In a mixture of 35 litres, the ratio of milk and water is 4:1. If 7 litres of water is added to the mixture, the ratio of milk and water of the new mixture will be

    • Options
    • A. 2:1
    • B. 1:2
    • C. 4:5
    • D. 5:4
    • Discuss
    • 5. A milkman buys milk at Rs 25 per litre and adds 1/4 of water to it and sells the mixture at Rs 26 per litre. His gain (in %) is?

    • Options
    • A. 25
    • B. 20
    • C. 30
    • D. 15
    • Discuss
    • 6. In a triangle XYZ , which of the following conditions is true

    • Options
    • A. XY YZ > ZX
    • B. XY + YZ < ZX
    • C. XY YZ < XZ
    • D. XY + ZX < YZ
    • Discuss
    • 7. In what ratio sugar of Rs 38 per kg and Rs 30 per kg be mixed with each other so that on selling mixture at Rs 35.2 per kg there will be a profit of 10%?

    • Options
    • A. 1 : 3
    • B. 3 : 7
    • C. 13 : 7
    • D. 9 : 4
    • Discuss
    • 8. In what ratio must a mixture of 20% milk strength be mixed with that of 60% milk strength so as to get a new mixture of 25% milk strength?

    • Options
    • A. 7 : 1
    • B. 4 : 1
    • C. 5 : 2
    • D. 9 : 2
    • Discuss
    • 9. A mixture contains spirit and water in the ratio of 3 : 2. If it contains 3 litres more spirit than water, the quantity of spirit in the mixture is

    • Options
    • A. 12 litres
    • B. 10 litres
    • C. 9 litres
    • D. 8 litres
    • Discuss
    • 10. Jar A has 36 litres of mixture of milk and water in the respective ratio of 5 : 4. Jar B which had 20 litres of mixture of milk and water, was emptied into jar A, and as a result in jar A, the respective ratio of milk and water becomes 5: 3. What was the quantity of water in jar B?

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


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