200=x+y+z x:y=1/4:6 y:z=8:5 Найти x, y, z

Question

200=x+y+z x:y=1/4:6 y:z=8:5 Найти x, y, z

Answer 1

y=z*8/5

х = y*1/24 = z*8/5*1/24 = z*1/15

200=z*1/15 + z*8/5 + z = z(1/15+24/15+15/15) = z*40/15

z=5*15=75

y=z*8/5=15*8=120

x = z*1/15 = 5