Question

3 numere naturale au suma 98 . media aritmetica a primelor doua este 26 , iar media aritmetica a ultimelor 2 este 37 . Aflati cele doua numere

Answer 1

∅ Rezolvare :




a + b + c = 98
______________________

( a + b ) : 2 = 26 →

→ a + b = 26 • 2

→ a + b = 52



( b + c ) : 2 = 37 →

→ b + c = 37 • 2

→ b + c = 74



a + b + c = 98
_____________

a + b = 52
__________

b + c = 74
__________


→ c = 98 — 52

→ c = 46



→ a = 98 — 74

→ a = 24



→ b = 98 — ( 46 + 24 )

→ b = 98 — 70

→ b = 28