Răspuns :
1.cata apa s-a folosit in cele 2 zile?
500+300=800l (apa in cele 2 zile)
2.cata apa era initial in rezervor?
800+200=1000l (erau initial in rezervor)
500+300=800l (apa in cele 2 zile)
2.cata apa era initial in rezervor?
800+200=1000l (erau initial in rezervor)