If i am twice as old as he was when i was as old as him. sum of our ages is 42. find my present age?
1. 26
2. 24
3. 12
4. None of these

• Ans is 24
  Let he was x year old that time, then i am 2x year old now.
  Now if he is y year old now, then i was y year old that time.
  Let time is t
  So y+t=2x
  x+t=y
  Given 2x+y=42
  By solving, my present age 2x=24 year
  
  Other way-
  I=2(H-(I-H))
  And I+H=42
  By solving
  I=24 year
• 10 years agoHelpfull: Yes(18) No(5)
• let age is x and 2x
  so x+2x=42,
  x=14,
  so 2x=28,,,option (d)
• 10 years agoHelpfull: Yes(12) No(10)
• 28 is wrong. Many person do same mistake thats why i asked this question.read question carefully.
• 10 years agoHelpfull: Yes(7) No(1)
• let my present age=x;
  and his present age=y;
  then according to the question:
  x+y=42....(1)*3
  2{y-(x-y)}=x
  =>2(2y-x)=x
  =>4y-3x=0.....(2)
  
  3x+3y=126
  -3x+4y=0
  .........
  7y=126
  =>y=18;
  then x=42-18=>24(ans)
  
• 10 years agoHelpfull: Yes(6) No(1)
• 2x=48
  x=24
• 10 years agoHelpfull: Yes(2) No(1)
• ans:24
  let my old age was x year
  x=2x
  sum of age=x+2x
  x+2x=42
  3x=42
  x=12
  x=2*12
  my present age is 24 year
  
• 10 years agoHelpfull: Yes(2) No(24)
• my age is 2x his was x so 2x+x=42...so my age at present is 28..
  
• 10 years agoHelpfull: Yes(1) No(4)
• none of this
• 10 years agoHelpfull: Yes(1) No(2)
• X+2x=42 X=14. 2x=28
• 10 years agoHelpfull: Yes(1) No(2)