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Cristianb

[Gangsta]



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(since 02-09-2013 12:05)
Joined: 26 Feb 2011
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Location: Nici eu nu prea stiu unde locuiesc.

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Post Posted: 11-03-2011, 12:44:48 | Translate post to: ... (Click for more languages)
Care este varsta tatalui unui baiat daca baiatul are 9 ani , iar atunci cand va avea varsta tatalui , tatal va avea 59 de ani?
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ion

[prin vacante]



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(since 10-12-2018 10:49)
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Post Posted: 11-03-2011, 13:29:20 | Translate post to: ... (Click for more languages)
x - perioada de timp
y - varsta tatalui

9 + x = y
y + x = 59

9 + x + x = 59 => x = 25 => y=34


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Cristianb

[Gangsta]



Status: Offline
(since 02-09-2013 12:05)
Joined: 26 Feb 2011
Posts: 706, Topics: 29
Location: Nici eu nu prea stiu unde locuiesc.

Reputation: 61.9
Votes: 4

 
Post Posted: 11-03-2011, 13:31:59 | Translate post to: ... (Click for more languages)
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