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va rog ...urgent..dau cotoana



Va Rog Urgentdau Cotoana class=

Răspuns :

Răspuns:

a+b+c=190

2a/100=10b/100=25c/100 simplificam fractiile

a/5=b/10=c/4=k

a=5k

b=10k

c=4k

5k+10k+4k=190

19k=190=>k=190:19=>k=10

a=5·10=50

b=10·10=100

c=10·4=40