Răspunsuri

2014-05-28T21:15:50+03:00
A+15a/100=B
B-10B/100=310.50
100B-10B=31050
90B=31050
B=345

a+15a/100=345
100a+15a=34500
115a=34500
a=300 pret initial
1 5 1