stefaniapaius2 stefaniapaius2

13-02-2015
Mathematics

Answered

Suma a trei numere este 30. Primul numar este de doua ori mai mare decat triplul celui de-al treilea numar si de doua ori mai mare decat al duilea numar. Care sunt numerele?

Verified Answer :

crisforp crisforp

13-02-2015

a + b + c = 30 ;
a = 6c ;
a = 2b ;

Then, c = a / 6 and b = a / 2 ;
a / 6 + a / 2 + a = 30 ;
a / 6 + 3a / 6 + 6a / 6 = 180 / 6 ;
10a = 180 ;
a = 18 ;
b = 9 ;
c = 3.

Good luck !

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