Question

MIKY93 TE ROOOOG!!!!!!!!!

Answer 1

$x \to pretul \ biletului \ de \ copil \\ y \to pretul \ biletului \ de \ adult \\\\\\ x;y \ \ \ d.p. \\ 3;4 \\\\ \frac{x}{3}=\frac{y}{4} =k \\\\ x=3k \\ y=4k \\\\\\ 5x+4y=93 \\\\ 5*3k+4*4k=93 \\\\ 15k+16k=93 \\\\ 31k=93 \ \ \ |:31 \\\\ \boxed{k=3} \\\\\\ x=3*3 \\\\ \boxed{x=9 \ euro \ de \ copil} \\\\\\ y=4*3 \\\\ \boxed{y=12 \ euro \ de \ adult}$