Question

Daca media aritmetica a trei numere este 75,44 si unul din numere estw 17,19 afla si media aritmetica a celorlalte doua

Answer 1

Ma=(a+b+c):3=75,44
(a+b+17,19):3=75,44
a+b+17,19=75,44x3
a+b=226,32-17,19
a+b=209,13

Ma=(a+b):2=209,13:2=104,465

Answer 2

(a+b+c)/3=75,44    =>   a+b+c= 75,44 x 3 = 226,32
a=17,19
a+b+c = 226,32
17,19+b+c = 226,32
b+c = 226,32 - 17,19 = 209, 13
(b+c)/2 = 209, 13 / 2 = 104,565

Sper ca e corect :)