Question

Un taran are de 5 ori mai multe gaini decat rate.Daca vinde 5 gaini si cumpara 3 rate,atunci numarul gainilor devine de 3 ori cat al ratelor. Cate gaini si cate rate a avut? b

Answer 1

$\frac{5x-5}{x+3}= \frac{3}{1}$

3(x+3)=1(5x-5)
3x+9=5x-5
9+5=5x-3x
14=2x
14:2=x
x=7

taranul a avut 7 rate
si 7*5=35 gaini