Răspuns :
Consideram numerele a,b,c
a+b+c=345
a+25%a=y+50%b=c+20%c
1.25a=1.5b=1.2c=x
a=x/1.25
b=x/1.5
c=x/1.2
a+b+c=x(1/1.25+1/1.5+1/1.2)=345
x=345/(1/1.25+1/1.5+1/1.2)
Efectuam calculele si obtinem x=150
a=150/1.25=120
b=150/1.5=100
c=150/1.25=125
a+b+c=345
a+25%a=y+50%b=c+20%c
1.25a=1.5b=1.2c=x
a=x/1.25
b=x/1.5
c=x/1.2
a+b+c=x(1/1.25+1/1.5+1/1.2)=345
x=345/(1/1.25+1/1.5+1/1.2)
Efectuam calculele si obtinem x=150
a=150/1.25=120
b=150/1.5=100
c=150/1.25=125