Question

Media aritmetica a numerelor a si b este 10 . Calculati media arit. a nr a , b si 10 .

Answer 1

(a+b)/2=10==>a+b=20===>(a+b+10)/3=(10+20)/3=>30/3=10
$\frac{(a+b)}{2}$⇒a+b=20⇒(a+b+10)/3=(10+20)/3⇒30/3=10

Answer 2

(a+b) :2=10
a+b=20
(a+b+10):3=
(20+10):3=
30:3=10