Răspuns :
S - (3/10 * S+2/5 * S+25/100 * S) = 600
S - (3/10 * S+2/5 * S+1/4 * S) = 600 aducem la acelasi numitor
S - S * (6/20 +8/20+5/20)=600
S-S*19/20=600
1/20 *S = 600
S = 12000 lei
S - (3/10 * S+2/5 * S+1/4 * S) = 600 aducem la acelasi numitor
S - S * (6/20 +8/20+5/20)=600
S-S*19/20=600
1/20 *S = 600
S = 12000 lei
I zi:
[tex] \frac{3}{10} s[/tex]
II zi
[tex] \frac{2}{5} s[/tex]
III zi
[tex] \frac{25}{100} s = \frac{1}{4}s [/tex]
restul=600 lei
[tex]s - ( \frac{3}{10} s + \frac{2}{5}s + \frac{1}{4} s) = 600[/tex]
[tex]s - ( \frac{6s + 8s + 5s}{20}) = 600 [/tex]
[tex]s - \frac{19s}{20} = 600[/tex]
[tex]20s - 19s = 12000[/tex]
[tex]s = 12000 \: lei[/tex]
I zi
[tex] \frac{3}{10} \times 12000 = 3600 \: lei[/tex]
[tex] \frac{3}{10} s[/tex]
II zi
[tex] \frac{2}{5} s[/tex]
III zi
[tex] \frac{25}{100} s = \frac{1}{4}s [/tex]
restul=600 lei
[tex]s - ( \frac{3}{10} s + \frac{2}{5}s + \frac{1}{4} s) = 600[/tex]
[tex]s - ( \frac{6s + 8s + 5s}{20}) = 600 [/tex]
[tex]s - \frac{19s}{20} = 600[/tex]
[tex]20s - 19s = 12000[/tex]
[tex]s = 12000 \: lei[/tex]
I zi
[tex] \frac{3}{10} \times 12000 = 3600 \: lei[/tex]