Răspuns :
{x,y,z}i.p.{6,4,5}
x+y+z=740
6x=4y=5z=k
x=k/6
y=k/4
z=k/5
k/6+k/4+k/5=740
(10k+15k+12k)/60=740
37k/60=740
k=740×60÷37
k=1200
x=1200:6=200
y=1200:4=300
z=1200:5=240
{x,y,z}i.p.{6,4,5}
x+y+z=740
6x=4y=5z=k
x=k/6
y=k/4
z=k/5
k/6+k/4+k/5=740
(10k+15k+12k)/60=740
37k/60=740
k=740×60÷37
k=1200
x=1200:6=200
y=1200:4=300
z=1200:5=240