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Question

Equal quantities of two solutions containing soap, salt and water in the ratio 1:2:3 and 3:2:1 are mixed together. What is the ratio of soap, salt, water in the resultant mixture?

  • 1:3:5
  • 1:2:4
  • 1:1:1
  • 1:4:7
Answer- C

Let the quantities of the two solutions be q each

Required ratio =

(q/6 +3q/6) : (2q/6 +2q/6) : (3q/6+q/6)

= 4q/6 : 4q/6 : 4q/6

= 1: 1 : 1