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=37 ori 3
a+b+c=111
111+25=136
a+b+c+25=136
(a+b+c+25):4=?
136:4=34
raspuns final=34

Answer 2

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