Răspuns :
a+b=22.5
a=b+7.3
b+7.3+b=22.5
2b+7.3=22.5
2b=22.5-7.3
2b=15.2
b=7.6 litri
a=7.6+7.3
a=14.9 litri
a=b+7.3
b+7.3+b=22.5
2b+7.3=22.5
2b=22.5-7.3
2b=15.2
b=7.6 litri
a=7.6+7.3
a=14.9 litri