Question

media aritmetica a 3 numare a,b,c este egala cu 37 . Calculati media aritmetica a numerelor a,b,c si 25

Answer 1

$m_{a1}=\frac{a+b+c}{3}=37 =\textgreater a+b+c=111 ; m_{a2}=\frac{a+b+c+25}{4}=\frac{111+25}{4}=\frac{136}{4}=34$

Answer 2

S=Ma1*3=37*3=111

Ma2=111+25)/4=136/4=34