← Quantitative Aptitude

Mixture and Alligation — Questions with Solutions

1 solved Mixture and Alligation questions from Quantitative Aptitude, as asked in SSC CGL and other SSC exams. Read the answer and explanation below, then practise the full set in the practice section.

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Q1. A 20 L mixture contains milk and water in the ratio 2:3. How much milk must be added to make the ratio 4:3?

20 लीटर मिश्रण में दूध और पानी का अनुपात 2:3 है। अनुपात को 4:3 बनाने के लिए कितना दूध मिलाना चाहिए?

  1. A. 10 L
  2. B. 8 L
  3. C. 5 L
  4. D. 9 L

Solution

Milk = (2/5)*20 = 8L. Water = 12L. Let x milk be added. (8+x)/12 = 4/3 => 24+3x = 48 => 3x = 24 => x = 8L.