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Old 09-23-2012   #1
Mr. Hui


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Default 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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Old 09-24-2012   #2
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Quote:
Originally Posted by Mr. Hui View Post
Julio is 36 years old, and James is 11 years old. In how many years will Julio's age be twice James's age?
Let x be the number of years.

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.
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Old 09-25-2012   #3
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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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Old 05-29-2015   #4
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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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Old 05-29-2015   #5
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go to Mr. Hui's profile page and then go to contacts and send him a private message asking your questions
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Old 06-17-2015   #6
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that's how you do that
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Old 11-01-2012   #7
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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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Old 01-26-2013   #8
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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; 04-25-2013 at 11:00 PM..
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Old 04-08-2013   #9
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*confused face*
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Old 04-08-2013   #10
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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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