Răspunsuri

2014-08-08T19:09:48+03:00
X-suma initiala

1/3 din x= 1/3 *x=  x/3 -pt joc

x-x/3= (3x-x)/3=  2x/3 -restul

20% din 2x/3= 20/100 *x= 1/5 *2x/3=  2x/15 -pt carte

2x/3 -2x/15=  (10x-2x)/15=  8x/15 -noul rest

8x/15=96

x=15*96/8

x=15*12

x=180

180/3=60 lei a costat jocul

2*180/15=  2*12=24 lei a costat cartea
7 5 7