Question

daca numarul a reperezinta 20% din numarul b, atunci asupraa+b =

Answer 1

a=20%b=> a=b$\frac{1}{5}$ => b=5a
$\frac{a}{a+b}$=$\frac{a}{a+5a}$=$\frac{a}{6a}$=$\frac{1}{6}$