Multiple choice

Mixture A contains 25% water and mixture B contains 10% water. In what ratio both mixtures should be mixed in a bottle so that in bottle ratio of milk and water be 7:1.

  1. 1:2

  2. 1:3

  3. 2:3

  4. 1:4

  5. 1:5
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Let the milk ratio in A and B be 75% and 90% respectively (since water is 25% and 10%). We need final mixture with milk:water = 7:1, meaning milk is 7/8 = 87.5%. Using allegation: (90 - 87.5) : (87.5 - 75) = 2.5 : 12.5 = 1:5. So A:B = 1:5.

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