Răspuns :
Răspuns:
x=30, y = 50, z= 100
Explicație pas cu pas:
(x, y, z) direct proportionale cu (3, 5, 10)
=> x/3 = y/5 = z/ 10 = k (notam cu k pentru a exprima x,y,z in functie de acesta)
=> x= 3k, y = 5k, z= 10k
x+y+z=180 => 3k+5k+10k=180
=>18k=180 => k= 10
=> x=3 • 10 = 30, y=5•10 = 50, z=10•10 = 100
X:3 = Y:5 = Z:10 =k
X= 3k
Y= 5k
Z=10k
X+Y+Z=180
3k+5k+10k= 180
18k=180
K=10
X=3k=30
Y=5k=50
Z=10k=100
X= 3k
Y= 5k
Z=10k
X+Y+Z=180
3k+5k+10k= 180
18k=180
K=10
X=3k=30
Y=5k=50
Z=10k=100