Question

alex si maria au economisit impreuna suma de 124 lei.daca alex ar cheltui 12 lei,atunci ar avea de trei ori mai multi bani decat maria.Cati bani are fiecare?va rog sa ma ajutati.

Answer 1

$A+M=124 \\ A-12=3M=>A=3M+12 \\ \\ 3M+12+M=124 \\ 4M+12=124 \\ 4M=124-12 \\ 4M=112 \\ M=28 \\ \\ A=3M+12 \\ A=3*28+12 \\ A=96$