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halp with math

 
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Negima
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PostPosted: Sun Dec 02, 2007 5:20 pm    Post subject: halp with math Reply with quote
plz help with algebra age problem
Code:
A father is now 24 years older than his son. In 8 years, the father will be twice as old as his son will be then. Find their present ages.


So far I got this
Code:
Let
Son=X
Father=x+24
In 8 years...

Someone please help me with the next part. I can do all the solving after I find out with the father and son equal.
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Negima
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PostPosted: Sun Dec 02, 2007 5:26 pm    Post subject: Reply with quote
Gloeilamp wrote:
the father is 40 and the son is 16, 8 years later the father is 48 and the son is 24.
Please show your work so I know what you did for the next problem.
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Reak
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PostPosted: Sun Dec 02, 2007 5:29 pm    Post subject: Reply with quote
// I are dumb.

Last edited by Reak on Sun Dec 02, 2007 5:34 pm; edited 1 time in total
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Reak
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PostPosted: Sun Dec 02, 2007 5:34 pm    Post subject: Reply with quote
Gloeilamp wrote:
rEakW0n wrote:
The son is 6 years old.

Father = 30
Son= 6

In 8 years:

Father = 38
Son = 14

Father/2 = Son


There are more solutions, I guess.


test results: you're a monkey


14 x 2 = 28


rofl ya true, I'm so dumb lol

I always hated these exercises

Last edited by Reak on Sun Dec 02, 2007 5:37 pm; edited 1 time in total
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nox
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PostPosted: Sun Dec 02, 2007 5:34 pm    Post subject: Reply with quote
wait what the fuck im way too blazed
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Reak
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PostPosted: Sun Dec 02, 2007 5:39 pm    Post subject: Reply with quote
so like that

S+24=F
F+8/2=S+8
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Flyte
Peanuts!!!!
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PostPosted: Sun Dec 02, 2007 5:40 pm    Post subject: Reply with quote
Son = S
Father = F

Statements that make each situation true:
F = S + 24
F + 8 = 2(S + 8)

Substitute/Solve:
(S + 24) + 8 = 2(S + 8)
S + 32 = 2S + 16
S = 16

F = 16 + 24
F = 40

16, 40

Add 8 to both for the second answer:

24, 48
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nox
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PostPosted: Sun Dec 02, 2007 5:47 pm    Post subject: Reply with quote
x+24= y
y=2x

x+24=2x
24=x

figures out the future pair, just minus 8 for the others
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Noz3001
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PostPosted: Sun Dec 02, 2007 5:50 pm    Post subject: Reply with quote
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adrxone
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PostPosted: Sun Dec 02, 2007 5:52 pm    Post subject: Reply with quote
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RazZ91
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PostPosted: Sun Dec 02, 2007 5:53 pm    Post subject: Reply with quote
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