Odpowiedzi

2009-11-04T18:34:56+01:00
X = 100%
100% - 10% = 90%
10% z 90 % =9
90 % +9% =99 %
2009-11-04T18:38:34+01:00
A zł to 100%
a-10% = a - 1/10a
cena obecna:
a-1/10a + 1/10 * (a-1/10a) = a-1/10a + 1/10a - 1/100a = a - 1/100a=99/100a
Odp. Cena obecna wynosi 99/100a
2009-11-04T19:25:41+01:00