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Calculati media aritmetica a trei numere atins ca Doua cate Doua au media aritmetica 11,36 si 32

Răspuns :

(a+b)/2=11
(b+c)/2=36
(a+c)/2=32

a+b=22
b+c=72
a+c=64
a+b+b+c+a+c=22+72+64
2(a+b+c)=158
a+b+c=79
media aritmetica=(a+b+c)/3=79/3=26,(3)