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Posted

eu,mama,si tata mergem la un hotel....camera de 3 pers costa 25 de dolari....noi fiecare platim 10 dolari......deci platim 30 de dolar....ala care ne cara bagajele se gandeste cum sa imparta 5 dolari la 3 oameni ...isi pastreaza 2 dolari si ne da fiecaruia un dolar.....deci camera ca costat decat 9 dolari.......9x3+2=29 unde este un dolar?

Posted

o idee ..

9*3 = 27 -atata dam

camera =25

27-25 = de aici mai raman 2 dolari pe care ii ia "ala de ne cara bagajele"..

cum am dat numa 9 dolari fiecare ,ne-au mai ramas 3 dolari ..

atunci vine 9*3+ 3 = ..

pentru ca aia 2 dolari el si retine din 9*3 ,iar 3 reprezinta restul cu cat am ramas.

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