Question

Aflati numerele a,b si c daca sunt direct proportionale cu numerele 1,2/3 si respectiv 2 si a+b+c=66.

Answer 1

a/1=b/2/3=c/2=k
a/1=k  a=k
b/2/3=k   b=2k/3
c/2=k   c=2k
a+b+c=66
k+2k/3+2k=66 aducem la acelasi numitor
3k+2k+6k=198
11k=198
k=198/11=18
a=18
c=36
b=12
cel mai bun raspuns???