Question

Nr.rationale a si b au raportul 4 si dierenta 18.Determinati media aritmetica a nr.a si b !! Va rog !!

Answer 1

a/b=4, a-b= 18, din a/b=4=> a=4b, inlocuind obtinem 4b-b=18, 3b=18, b=18:3, b=6 => a=4•6, a=24, Ma= (6+24):2=30:2=15