Răspuns :
x=suma
x-55%x=144
x-55x/100=144
100x-55x=1440
45x=14400
x=320 lei
x-55%x=144
x-55x/100=144
100x-55x=1440
45x=14400
x=320 lei
100%-55%=45%
45%............144 lei
100%...........x lei
x=144/45x100=3,2x100=320 lei
45%............144 lei
100%...........x lei
x=144/45x100=3,2x100=320 lei