Question

Suma a 3 numere este 84 . Aflati numerele , stiind ca sunt direct proportionale cu 1,(4) ; 1,(5) si respectiv 1,(6)

Answer 1

1,(4)=(14-1)/9=13/9
1,(5)=(15-1)/9=14/9
1,(6)=(16-1)/9=15/9
a=13k/9
b=14k/9
c=15k/9
13k/9+14k/9+15k/9=84
13k+14k+15k=84x9
42k=756
k=756/42=18
a=13x18/9=26
b=14x18/9=28
c=15x18/9=30