Question

Sall am o problema su nu stiu sa o fac .  Andreea ,Maria,si Elena au impreuna 508 lei . Andreea are cu 19 lei mai mult decat Maria , iar Maria are cu 57 lei mai mult decat Elena . Ce suma de bani are fiecare?

Answer 1

a=suma Andreea
b=suma Maria
c= suma Elena
a+b+c=508
a-19=b    a=b+19
b-57=c
b+19+b+b-57=508
3b=508+57-19=546
b=182 lei are Maria
a=182+19=201lei are Andreea
c=182-57=125 lei are Elena

Answer 2

A+M+E=508
A=M+19
M=E+57
M+19=E+57+19
E+57+19+E+57+E=508
3E+133=508
3E=508-133
3E=375
E=375:3
E=125
A=M+19
A=E+57+19
A=125+57+19
A=201
M=E+57
M=125+57
M=182

201+182+125=508