Question

Sa se afle numerele x, y, z, stiind ca : x : y = 3 x : z =6 x + y +z=90

Answer 1

x:y=3=>y=x:3
x:z=6=>z=x:6
x+y+z=x+x:3+x:6=>9*x:6=90=> $x=\frac{6*90}{9} =60$
y=60:3=20
z=60:6=10