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a+b+c=10
nr sunt direct proportionale cu nr 2,4,5
a=?
b=?
c=?


Răspuns :

a/2=b/4=c/5=k
a=2k
b=4k
c=5k
a+b+c=10
2k+4k+5k=10
11k=10 =>k=10/11
a=20/11
b=40/11
c=50/11
{a;b;c} -> {2;4;5}
a+b+c=10
a/2×b/4×c/5=K
a=2K
b=4K
c=5K

2K+4K+5K=10
11K=10
K=10/11 =>

a=20/11
b=40/11
c=50/11

Mult succes! :3