Question

Aflati 3 nr naturale stiind ca doua cate doua au media aritmetica 150,160 si respectiv 190

Answer 1

(a+b)/2 = 150 ⇒ a+b=300
(b+c)/2=  160 ⇒ b+c = 320
(a+c)/2 = 190 ⇒ a+c = 380
a+b+b+c+a+c=300+320+380
2a+2b+2c=1000
a+b+c=500
a+b=300 ⇒ c=200

b+c=320
c= 200 ⇒ b=120

a+c=380 
c=200 ⇒ a =180