Răspuns :
2a = 3b = k
a = k/2
b = k/3
a + b = 50 => k/2 + k/3 = 50 => 3k/6 + 2k/6 = 50 => 5k/6 = 50
5k = 6*50 = 300
k = 300:5 = 60
Atunci a = k/2 = 60/2 = 30
b = k/3 = 60/3 = 20
a + b = 50
a = k/2
b = k/3
k/2 + k/3 = 50
3k + 2k = 300
5k = 300
k = 60
a = 60/2 = 30
b = 60/3 = 20