fie x suma initiala. x/6 a cheltuitin prima zi. x-x/6=5x/6 rest dupaprima zi. 0,(3)=3/9=1/3. 1/3*5x/6=5x/18 a cheltuit a doua zi. 5x/6-5x/18=10x/18=5x/9 rest dupa a doua zi. 0,25*5x/9=1/4*5x/9=5x/36 a chetuit a treia zi. 5x/9-5x/36=15x/36 restul dupa a treia zi. 15x/36=81 =>x=81*36/15=194,4 lei a fost suma initiala. in prima zi a cheltuit 194,4/6=32,4 lei, a doua zi a cheltuit 5*194,4/18=54 lei. a treia zi a cheltuit 5*194,4/36=27 lei .c) 32,4=p/100*54=>p=100*32,4/54=3240/54 =>p=60% inde p reprezinta procentul
