Răspuns:
1. 100%-8%=92%
92%.............23000lei
100%............. x
-----------------------------------
x=100×23000:92=25000 lei pretul initial
1. 100%+15%=115%
115%.............126500 lei
100%..................x
------------------------------
x=100×126500:115=110000 lei pretul initial
1. 100%+4%=104%
104%................31200 lei
100%............. x
-----------------------------
100×31200:104=30000 lei pretul initial
1. 100%-14%=86%
86%................103200 lei
100%..................x
-----------------------------
x=100×103200:86=120000 lei pretul initial