Question

daca media aritmetica a doua numere este 15, calculati suma celor doua numere.

Answer 1

$m_a=\frac{a+b}{2}=\textgreater a+b=2m_a=2*15=30$

Answer 2

Ma = (a+b)/2 => S = Ma x 2 = 15 x 2 = 30