• Numerical Ability - Ratio & Proportion
Question

Determine the ratio of the number of people having characteristic X to the number of people having characteristic Y in a population of 100 subjects from the following table:
Having X and Y - 10
Having X but not Y - 30
Having Y but not X - 20
Having neither X nor Y - 40

  • A) 4 : 3
  • B) 3 : 2
  • C) 1 : 2
  • D) 2 : 3
  • E) None of these 
Solution

Ans.A
Sol. Number of people having characteristic X
= 10 + 30 = 40
Number of people having characteristic Y
= 10 + 20 = 30
Required ratio = 40 : 30 = 4 : 3

Ans.A
Sol. Number of people having characteristic X
= 10 + 30 = 40
Number of people having characteristic Y
= 10 + 20 = 30
Required ratio = 40 : 30 = 4 : 3
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