Răspunsuri

2014-03-31T14:50:31+03:00
I   |____c___|...32..|
a  |____c___|109...|
m |____c___|..78..|

3xc+32+109+78=669
3xc+219=669
3xc=450
c=450:3
c=150  - Fiecare a cheltuit 150 de lei

ionela a avut:150+32=182
ana a avut:150+109=259
maria a avut: 150+78=228

VERIFICARE:
182+259+228=669
4 4 4