Răspunsuri

2014-04-13T22:23:49+03:00
15/100*120=3/20*120=18-prima reducere
120-18=102-restul
x% din 102=89,76
x/100*102=89,76
x/100=89,76/102
x=100*89,76/102=8976/102=88%
5 3 5