Răspuns :
Prima,zi-3S/10
A,doua,zi-2S/5
A,treia,zi-S/4
a)Aducem,la,numitor,comun,cele,trei,fractii(20)
6S/20
8S/20
5S/20
=>In,a,treia,zi,cheltuieste,cel,mai,putin
b)6S+8S+5S+2000=20S
2000=20S-19S
S=2000lei
A,doua,zi-2S/5
A,treia,zi-S/4
a)Aducem,la,numitor,comun,cele,trei,fractii(20)
6S/20
8S/20
5S/20
=>In,a,treia,zi,cheltuieste,cel,mai,putin
b)6S+8S+5S+2000=20S
2000=20S-19S
S=2000lei