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WBCS Main Examination 2023 — Paper VI: Arithmetic and Test of Reasoning · Question 124 of 200

Q124
ArithmeticRatio, Proportion & Mixtures
In 240 cc of a mixture of glycerine and water, the ratio of the volumes of water and glycerine is 1 : 3. How much cc of water should be added with the mixture so that ratio of the volumes of water and glycerine be 2 : 3?
  1. a.60 cc
  2. b.50 cc
  3. c.80 cc
  4. d.40 cc

Answer: (A) 60 cc

The mixture has 60 cc water and 180 cc glycerine. For water : glycerine = 2 : 3 the water must be 120 cc, so 120 − 60 = 60 cc must be added. 80 cc would make the ratio 7 : 9.

Q123 Whole paperQ125
In 240 cc of a mixture of glycerine and water, the ratio of the vol… — WBCS Main Examination 2023 Q124 | Prostuti360°