Răspuns:
Explicație pas cu pas:
ma=100 =>(a+b+c):3=100 => a+b+c=300
{a;b;c} d.p. {2;3;5}⇒ [tex]\displaystyle \frac{a}{2}= \frac{b}{3} = \frac{c}{5} =k[/tex] =>
a=2k
b=3k
c=5k
a+b+c=300 => 2k+3k+5k=300
10k=300
k=300:10
k=30
a=2k=2x30=60 a=60
b=3k=3x30=90 b=90
c=5k=5x30=150 c=150
