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a/2=b/5,b/3=c/4 si a+b+c=410

Răspuns :

a/2=b/5⇒a=2b/5
b/3=c/4⇒c=4b/3


a+b+c=410
2b/5+b+4b/3=410
6b+15b+20b=6150
41b=6150
b=150
a=300/5=60
c=600/3=200