Multiple choice

48 litre of Glycerin is mixed with 144 litre Rose water. D litre of total mixture is taken out and 32 litre Glycerin and 48 litre Rose water are added in the mixture. The final mixture contains 30% Glycerin, find the quantity of the mixture that is taken out.

  1. 24 litres

  2. 32 litres

  3. 40 litres

  4. 20 litres

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Initial: 48G, 144R (Total 192). Remove D: (48-D/4)G, (144-3D/4)R. Add 32G, 48R: (80-D/4)G, (192-3D/4)R. Total mixture = 192-D+80 = 272-D. Glycerin % = (80-D/4)/(272-D) = 0.3. 80-0.25D = 81.6 - 0.3D. 0.05D = 1.6. D = 32.

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