Question

mama tata si fratele castiga intr-o luna 5888 de lei cat castiga fiecare daca mama si tata castiga inpreuna 4388 de lei iar tatal si fratele meu castiga inpreuna 4000 de lei

Answer 1

Cati bani castiga mama  ?
5888 - 4000 = 1888
Cati bani castiga fratele ?
5888 - 4388 = 1500
Cati bani castiga tata ?
5888 - (1888 + 1500) = 2500 

Answer 2

m+t+f=5888
m+t=4388
t+f=4000
mama?
m+4000=5888
m=1888
tata?
1888+t=4388
t=4388-1888
t=2500
fratele?
2500+f=4000
f=4000-2500
f=1500