Răspuns :
notam pret initial calculator= x
x+ 10/100 x +15/100x=1265
x+ x/10 +3x/20 =1265
20x+ 2x +3x= 1265*20
x = 1265*20/25= 253*4= 1012
x+ 10/100 x +15/100x=1265
x+ x/10 +3x/20 =1265
20x+ 2x +3x= 1265*20
x = 1265*20/25= 253*4= 1012
1265:125%=1012 lei pretul initial
1012*25:100=25300:100=253
25%=253 lei
1265lei-253 lei=1012 lei
1012+253=1265 pret actual
1012*25:100=25300:100=253
25%=253 lei
1265lei-253 lei=1012 lei
1012+253=1265 pret actual