Question

3 numere sunt proportionale cu 25% 20% si 15% din suma lor. Ce fractie din numar reprezinta fiecare numar

Answer 1

a+b+c=S
a/(25S/100)=b/(20S/100)=c/(15S/100)=S/[(25+20+15)S/100]=S/(60S/100)
4a/S=5b/S=20c/3S=5/3
a=5S/12
b=S/3
c=S/4