Matematică, întrebare adresată de stefygabryela, 9 ani în urmă

suma a 3 numere este 1375.media artimetica a ultimelor 2 numere este 500 si diferenta acestora 80.determina cele 3 numere

Răspunsuri la întrebare

Răspuns de radualingabriel1
9
(b+c):2=500 
b+c=1000 
a=1375-1000=375 
b /___________/_____/ 
c /__________/---80--/ 

1 segment=c 
2 segmente+80=1000 
2 segmente=920 
1 segment=920:2=460=c 
b=460+80=540 
375+540+460=1375

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