Răspunsuri

2014-05-01T13:46:58+03:00
Y=50x/100=x/2=>x=2y
z=60y/100=3y/5=>5z=3y
y/x=1/2
z/y=3/5
1/2+3/5=11/10=1,1
b)
x+2y+3z=580
y/x=1/2=k
z/y=3/5=k
y=5k
x=10k
z=3k
10k+10k+9k=580
29k=580
k=20
x=200
y=100
z=60


2014-05-01T17:27:15+03:00
Pai: y=50x/100=x/2=>x=2y
z=60y/100=3y/5=>5z=3y
y/x=1/2
z/y=3/5
1/2+3/5=11/10=1,1
b)
x+2y+3z=580
y/x=1/2=k
z/y=3/5=k
y=5k
x=10k
z=3k
10k+10k+9k=580
29k=580
k=20
Atunci:
x=200
y=100
z=60