Răspuns :
2x=3y=5z y=2x/3 z=2x/5
x+y+z=620
x+2x/3+2x/5=620
15x+10x+6x=9300
31x=9300
x=300 euro muncitor 1
y=300*2/3=200 euro muncitor 2
z=300*2/5=120 euro muncitor 3
x+y+z=620
x+2x/3+2x/5=620
15x+10x+6x=9300
31x=9300
x=300 euro muncitor 1
y=300*2/3=200 euro muncitor 2
z=300*2/5=120 euro muncitor 3
a+b+c=620
a/(1/2)=b/(1/3)=c/(1/5)=k
a/(1/2)=k⇒a=k/2
b/(1/3)=k⇒b=k/3
c/(1/5)=k⇒c=k/5
k/2+k/3+k/5=620
15k+10k+6k=18600
31k=18600
k=600
a=600/2=300-primul muncitor
b=600/3=200-al doilea muncitor
c=600/2=120-al treilea muncitor
a/(1/2)=b/(1/3)=c/(1/5)=k
a/(1/2)=k⇒a=k/2
b/(1/3)=k⇒b=k/3
c/(1/5)=k⇒c=k/5
k/2+k/3+k/5=620
15k+10k+6k=18600
31k=18600
k=600
a=600/2=300-primul muncitor
b=600/3=200-al doilea muncitor
c=600/2=120-al treilea muncitor