Question

Media aritmetica a 3 nr. este 50.Stiind ca media aritmetica a ultimelor doua nr.este 35, aflati primul numar. URGENT !!!!!!!!!!

Answer 1

(a+b+c):3=50
a+b+c=50x3=150
(b+c):2=35
b+c=35x2=70
a+70=150
a=150-70
a=80