Jawabanmu

2014-09-07T17:53:33+07:00
2600:12000x100% = 21,67%

maka kenaikan harganya adalah 21,67%
2014-09-07T17:53:39+07:00
Misalkan Harga awal = a, dan harga sekarang = s, persen = p
s= a+ a x persen
14.600=12.000 + 12.000 x p/100
14.600-12.000 = 120p
2.600=120p
p = 2600/120 = 130/6% = 21 \frac{2}{3} %