Question

Determinati doua numere rationale pozitive, stiind ca au media aritmetica egala cu 40 si raportul $\frac{2}{3}$

Answer 1

(a+b)/2=40   ⇒ a+b=80
a/b=2/3       ⇒ a=2b/3
2b/3+b=80
2b+3b=240
5b=240
b=48
a=80-48=32

verificare (32+48)/2=80/2=40
               32/48=16/24=2/3