Multiple choice

A perfume production company prepares perfume by mixing it with water. The new mixture of 340 litre contains perfume and water in the ratio 27 : 7. Later, the company decides to further liquify the mixture to form a new mixture containing perfume and water in the ratio 3 : 1. How much water must they have to add in the previous mixture?

  1. 20 litre

  2. 15 litre

  3. 10 litre

  4. 24 litre

  5. 30 litre
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the initial 340L mixture with perfume:water = 27:7, perfume = (27/34) × 340 = 270L and water = (7/34) × 340 = 70L. To achieve the new ratio 3:1, we need water = 270/3 = 90L. Additional water required = 90 - 70 = 20L. Option A is correct.

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