Media aritmetica ponderata dintre 2 numere este:
[tex] M_{ap} = \frac{ a_{1}* p_{1} + a_{2} * p_{2} }{ p_{1}+ p_{2} } [/tex]
[tex] \frac{ \frac{11}{24}*2+ \frac{4}{25}*5 }{2+5} = \frac{ \frac{11}{12}+ \frac{4}{5} }{7} =( \frac{55}{60} + \frac{48}{60} )* \frac{1}{7} = \frac{103}{60} * \frac{1}{7} = \frac{103}{420} [/tex]