Răspuns :
336 = x + 12% · x = 100% ·x + 12%·x
336 lei = 112% · x
x = 336 : 112 · 100
x = 3 · 100
x = 300 lei
336 lei = 112% · x
x = 336 : 112 · 100
x = 3 · 100
x = 300 lei
[tex]\displaystyle n+ \frac{12}{100} \cdot n=336 \\ \frac{100n}{100} + \frac{12n}{100} =336 \\ \frac{112n}{100} =336 \\ 112n=336 \cdot 100 \\ 112n=33600 \\ n= \frac{33600}{112} \\ n=300[/tex]