Răspuns:
a = 40 ; b = 50 ; c = 60
Explicație pas cu pas:
a+b+c = 150
a/4 = b/5 ; b/10 = c/12 =>
b = 5a/4
c = 12b/10 => c = 6b/5 => c = 6·(5a/4)/5
c = 30a/20 = > c = 3a/2
⁴⁾a + 5a/4 + ²⁾3a/2 = ⁴⁾150 =>
4a + 5a + 6a = 600 => 15a = 600 => a = 600:15 =>
a = 40 =>
b = 5·40:4 = > b = 50 =>
c = 3·40:2 => c = 60
#copaceibrainly
