Răspuns :
1kg--------------400lei
400+15=415 lei prima scumpire
400+10=410 a 2 scumpire
400+(15+10)=425 lei costa 1 kg de faina in prezent
400+15=415 lei prima scumpire
400+10=410 a 2 scumpire
400+(15+10)=425 lei costa 1 kg de faina in prezent
1kg=400lei
15% din 400lei=400:100x15=4x15=60 lei
1kg+15%(scumpirea 1)=460lei
10% din 460=460:10=46
1kg+prima scumpire+a doua scumpire=506 lei
E bine?