Question

Media aritmetica a trei nr a,b,c este egala cu 37.Calculati media aritmetica a nr a,b,c si 25

Answer 1

(a+b+c):3=37
a+b+c=111
(a+b+c+25):4=(111+25):4=136:4=34

Answer 2

$\frac{a+b+c}{3}$=37
a+b+c=3·37
a+b+c=111
$\frac{a+b+c+25}{4}$=
$\frac{136}{4}$=34