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Quiz: Mixtures and Alligation

5 questionsNo time limitPass: 60%+10 XP on first pass

Mixing two things at different prices or strengths? The alligation cross gives the mixing ratio in seconds. Includes milk-water and replacement questions.

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  1. Question 1

    In what ratio must tea at ₹200/kg be mixed with tea at ₹260/kg to get a blend worth ₹240/kg?

  2. Question 2

    How much water should be added to 15 litres of a 40% sugar solution to make it 30%?

  3. Question 3

    Container A has milk : water = 5 : 3 and container B has 3 : 1. Equal quantities are mixed. What is the new ratio of milk to water?

  4. Question 4

    A 50-litre tank of pure juice has 5 litres removed and replaced with water, twice. How much juice is left?

  5. Question 5

    A class average is 60. Boys average 55 and girls average 70. What is the ratio of boys to girls?