peter and paul are two friends.the sum of their age is 35 years.peter is twice as old as paul was when peter was as old as paul is now.what is the present age of peter?

• For these type of questions, use the formula 1) 7x/4 =[sum of ages] where x is the age of elder.
  2)7x/3 = [sum of ages] whr x is the age of younger. Here peter is elder so 7x/4=35. Solve you get x= 20
• 13 years agoHelpfull: Yes(222) No(46)
• let prst ages,x & y .so x+y=35
  the age diffrt=x-y
  poul is now y so when peter is y at that time poul was y-(x-y)
  so according to 2nd cndn x=2(y-(x-y)
  so y=3x/4
  putting this value in x+y=35
  x+3x/4=35
  7x=140
  x=20
• 13 years agoHelpfull: Yes(75) No(7)
• Let peter's age is x.Paul(35-x).peter was (35-x) before (x-(35-x))=(2x-35)years.so that time Paul was ((35-x)-(2x-35))=(70-3x).now from question we can say x=2(70-3x)
  so x=20
• 13 years agoHelpfull: Yes(25) No(12)
• Let x be the past age of Paul,
  let y be the no. of years,
  so after y years age of Paul will be 'x+y'.
  Given,
  Peter's current age=2x,
  Peter's past age=x+y,
  so, 2x+(x+y)=35
  => 3x+y=35--------I
  
  Also, 2x-(x+y)=(x+y)-x
  => x-y=y
  => x=2y-----------II
  
  from I & II,
  3(2y)+y=35
  => y=5
  So, x=10 (from II)
  
  Thus, Peter's current age= 2x = 20.
• 13 years agoHelpfull: Yes(11) No(6)
• suppose peter's age is=x
  paul's age is=y
  we know x+y=35......(1)
  difference of age is x-y
  when peter was y years old peter was twice of paul's age suppose at that time paul was a years old
  so we get y=2a.....(2)
  a is the difference of age between paul's present age and that time age so we get a=y-(x-y)
  putting the value of a into equation(2)
  y=2(2y-x)
  or,3y-2x=0....(3)
  by solving (1) and (3) we get
  x=21
  
• 13 years agoHelpfull: Yes(9) No(19)
• Let,x= Paul,y= peter,x+y=35,3x-2y=0,....ans 21
• 13 years agoHelpfull: Yes(6) No(36)
• Let peter's age is A.Paul(35-A).
  peter was (35-A) before {A-(35-A)}=(2A-35)years.so that time Paul was {(35-A)-(2A-35)}=(70-3A).
  now from question we can say A=2(70-3A)
  so A=20 years
  
  hence peter is 20 yr old.
• 13 years agoHelpfull: Yes(4) No(2)
• this can be done in trial and error method. we can take 35 as peter 21 and paul 14. so as given in question wen peter s 14 i.E 7 years back. he s twice as old as paul . so it satisfies the condition
• 12 years agoHelpfull: Yes(3) No(2)
• ans.20.........
• 13 years agoHelpfull: Yes(2) No(16)
• the ans. will be 20
• 13 years agoHelpfull: Yes(1) No(10)
• your question hurts me...:D
• 9 years agoHelpfull: Yes(1) No(0)
• good question
  
• 9 years agoHelpfull: Yes(0) No(0)