Question

Media aritmetica a doua numere rationale este 16,75,iar raportul lor este 1,3(3).Aflati numerele

Answer 1

1,3(3)=(133-13)/90=120/90=4/3
(a+b)/2=16,75       a+b=16,75*2=33,5=335/10=67/2
a/b=4/3    3a=4b      b=3a/4
a+3a/4=67/2         4a+3a=134
7a=134
a=134/7=19,(142857)
b=67/2-134/7=(469-268)/14=201/14=14,3(571428)