a, b-cei doi frati
a+b=370
b=a - 15a/100=100a/100 - 15a/100 = 85a/100=
a+85a/100=370
100a/100+85a/100=370(inmultesc cu 100)
100a+85a=37000
185a=37000
a=37000:185
a=200
b=370-a
b=370-200
b=170
Succes!
