Question

Media aritmetica a doua numere este 1,25.Calculati numerele stiind ca diferenta lor este 1 supra 3

Answer 1

$a-b= \frac{1}{3} \\ \frac{a+b}{2}=1,25 \\ a-b= \frac{1}{3};a+b=2,5 \\ 2a= \frac{5}{2}+ \frac{1}{3} \\ 2a= \frac{15+2}{6} \\ a= \frac{17}{12};b= \frac{5}{2}- \frac{17}{12}= \frac{13}{12}$