Prima zi
[tex]\frac{x}{2}[/tex]
Rest:
[tex]\frac{x}{2}[/tex]
A doua zi
[tex]\frac{1}{4} \times \frac{x}{2} +7=\frac{x}{8} +7[/tex]
Rest:
[tex]\frac{x}{2}-\frac{x}{8} -7=\frac{3x}{8}-7[/tex]
A treia zi
20 ghivece
[tex]\frac{x}{2}+ \frac{x}{8}+7+20=x[/tex]
4x+x+56+160=8x
3x=216
x=72 ghivece
prima zi restul
|-----------------|-----------------|
a doua zi
|----|----|----|----|
+7+20=27
27:3=9 un segemt |----|
Deci a doua zi 9+7=16 ghivece
Prima zi 9×4=36 ghivece
Total: 36+16+20=72 ghivece
