Răspuns :
a/5 = b/11 = c/9 = k
a = 5k
b = 11k
c = 9k
4a+3b+2c = 284
4*5k+3*11k+2*9k = 284
20k+33k+18k = 284
71k=284
k = 4
Atunci a = 5k = 5*4 = 20
b = 11k = 11*4 = 44
c = 9k = 9*4 = 36
a/5 = b/11 = c/9 = k
a = 5k
b = 11k
c = 9k
4a+3b+2c = 284
4*5k+3*11k+2*9k = 284
20k+33k+18k = 284
71k=284
k = 4
Atunci a = 5k = 5*4 = 20
b = 11k = 11*4 = 44
c = 9k = 9*4 = 36