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09232012  #1 
Join Date: Mar 2005
Posts: 10,647

Word Problem, Lvl 5, Q#2
Julio is 36 years old, and James is 11 years old. In how many years will Julio's age be twice James's age?
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Do Math and you can do Anything! 
09242012  #2  
Join Date: Dec 2008
Posts: 249

Quote:
36 + x = 2(11 + x) 36 + x = 22 + 2x 36 + x  x = 22 + 2x  x 36 = 22 + x 36  22 = 22  22 + x 14 = x So in 14 years Julio will be 50 and James will be 25. 

09252012  #3 
Join Date: Mar 2005
Posts: 10,647

Thanks, MAS1. I always prefer an elegant algebraic solution.
In the book, this is a 5th grade problem. Can anyone find a way to solve it without algebra?
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Do Math and you can do Anything! 
11012012  #4 
Join Date: Apr 2011
Posts: 821

36 11 i know its a lot of work but still works
37 12 38 13 39 14 40 15 41 16 42 17 43 18 44 19 45 20 46 21 47 22 48 23 49 24 50 25
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01262013  #5  
Join Date: Oct 2012
Posts: 340



01262013  #6  
Join Date: Oct 2012
Posts: 340

36 11
37 12 38 13 39 14 40 15 41 16 42 17 43 18 44 19 45 20 46 21 47 22 48 23 49 24 50 25 Last edited by imad 150; 04252013 at 11:00 PM.. 

04082013  #7 
Join Date: Feb 2013
Posts: 96

*confused face*
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04082013  #8  
Join Date: May 2011
Posts: 124

Best answer without using formulas:
We start at 11  36 36/2=18 so, 18  36+7 = 18  43 43/2=22.5 so, 23  43+5 = 23  48 48/2=24 so, 24  49 49/2= 24.5 so, 25  50 Done. In 14 years.
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You need only 2 objectives in life: when you look at the past and you say that you coudn't have done any better than that is the 1º one. The 2º one is to do better than that Then, you must learn 2 rules in your life: Rule number one : respect yourself and the others Rule number two: first learn rule number one 

07042013  #9 
Join Date: Jul 2013
Posts: 1

The best answer would be:
given, James 11 years Julio 36 years After some years Julio will be twice the age of James. Julio = 2 * James. consider year wise. first, Left hand side should be always >= to Right Hand Side So, consider the age after 10 years add 10 on both sides: Julio + 10 = 2 * (James + 10) 36 + 10= 2 * (11 + 10) 46 = 42 46 = 42 ( which is not equal to each other) by this u can make out another 4 should be added on both side to make it LHS = RHS 36 + 14 = 2 * (11+14) So after 14 years L.H.S = R.H.S after 14 years the age of Julio will be twice the age of James. 
05292015  #10  
Join Date: Apr 2015
Posts: 28

Question
Dear Mr.Hui this question is for you. Although this question is a problem it is not a maths problem. The question is , what age is the game Maths Payne suitable for?


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