Fie a-numarul
25/100×a=120
1/4×a=120
a/4=120
a=120×4
a=480
Salut.
Fie numarul cautat = x.
25% din x = 120 deci [tex]\displaystyle{\frac{25}{100} \cdot x =120}[/tex]
Simplificam fractia cu 25.
[tex]\displaystyle{\frac{1}{4}\cdot x=120}[/tex]
[tex]\displaystyle{\frac{x}{4}=120}[/tex]
x = 120 × 4
x = 480
- Lumberjack25
