Răspuns :
40:40x5=5 litri (dimineata)
40:40x8=8 litri (pranz)
5+8=13 litri ( dimineata+ pranz)
40-13=27 litri (seara)
40:40x8=8 litri (pranz)
5+8=13 litri ( dimineata+ pranz)
40-13=27 litri (seara)