Question

O persoana are o suma s de bani.in prima zi cheltuieste 30% din suma S,a doua ziv cheltuiestr 1 supra 4 din S.Stiind ca persoanei ii raman 6 lei,aflati cat a cheltuit in prima zi

Answer 1

100% = suma totala
1/4=25%
100%-(30%+25%)=100%-55%=45% ii raman
45%.........................6 lei
100%...................... x lei
x=100x6:45=600:45=13,(3) lei suma totala
13,3x30:100=399,(9):100=3,(9) lei a cheltuit in prima zi