x-pretul initial
8% din x= 8/100*x= 2/25*x= 2x/25 -prima reducere
x-2x/25= (25x-2x)/25= 23x/25-restul
8% din 23x/25= 8/100* 23x/25= 2/25 *23x/25= 46x/625- a2a reducere
23x/25 -46x/625= (575x-46x)/625= 629x/625-noul rest
629x/625=4232
x=625*4232/629
x=4205,08