Question

I,a,l au economisit impreuna o suma de bani;sa se afle cat a economisit fiecare stiind ca i impreuna cu a au economisit 125l;
a impreuna cu l au economisit impreuna 135 lei;
i impreuna cu l au economisit 110 lei

Answer 1

l+a+i=x
i+a=125
a+l=135
i+l=110
din ultimile doua ecuatii adunate
a+i+2l=245
125+2l=245
2l=120
l=60
a+l=135
a=75
i=50
x=60+50+75=185

Answer 2

i+a=125
a+l=135
i+l=110
2i+2a+2l=125+135+110=370
2x(i+a+l)=370
i+a+l=370:2=185
i+a+l=185
125+l=185
l=185-125
l=60

i+135=185
i=185-135
i=50

a+110=185
a=185-110
a=75