What is the present age of Tanya?
I.The ratio between the present ages of Tanya and her brother Rahul is 3 : 4 respectively.
II.After 5 years the ratio between the ages of Tanya and Rahul will be 4 : 5.
III.Rahul is 5 years older than Tanya.

A. I and II only
B. II and III only
C. I and III only
D. All I, II and III
E. Any two of the three
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• Answer: Option E
  
  Explanation:
  
  I. Let the present ages of Tanya and Rahul be 3x years and 4x years.
  
  II. After 5 years, (Tanya's age) : (Rahul's age) = 4 : 5.
  
  III. (Rahul's age) = (Tanya's age) + 5.
  
  From I and II, we get 3x + 5 = 4 . This gives x.
  4x + 5 5
  
  Tanya's age = 3x can be found. Thus, I and II give the answer.
  
  From I and III, we get 4x = 3x + 5. This gives x.
  
  Tanya's age = 3x can be found. Thus, I and III give the answer.
  
  From III : Let Tanya's present age be t years.
  
  Then Rahul's present age = (t + 5) years.
  
  Thus, from II and III, we get : t = 4 . This gives t.
  t + 5 5
  
  Thus, II and III give the answer.
  
  Correct answer is (E).
• 12 years agoHelpfull: Yes(7) No(1)
• LET TANIAS N RAHULS PRESENT AGE B X AND Y RESPECTIVELY
  I)X:Y=3:4 -> X=(3/4)Y
  II)X+5/Y+5=4/5
  III)X=Y-5
  
  THERE ARE TWO UNKNWNS N THREE EQUATIONS...SO X AND Y CAN B FOUND OUT EASILY USING ANY OF THE TWO EQUATIONS
  X=15
  Y=20
• 12 years agoHelpfull: Yes(3) No(0)
• ratio between present ages of Tanya and her brother is 3:4 may be 15:20
  after 5 years ratio is 4:5 means 20:25
  (or)
  Rahul is 5 years older than Tanya means if add 5 years to their both ages 20:25
  so the answer is present age of Tanya is 15 years.
  option E is correct answer..
• 8 years agoHelpfull: Yes(0) No(0)
• present ages of tanya and rahul are 3x,4x
  after 5 years ages ratio is 3x+5,4x+5
  3x+5/4x+5=4/5
  5(3x+5)=4(4x+5)
  15x+25=16x+20
  x=5
  present age of tanya is =3x=3(5)=15
• 7 years agoHelpfull: Yes(0) No(0)