Odpowiedzi

2010-03-29T21:46:32+02:00
6 * 50x + 7 * 100x = 2000
300x + 700x = 2000
1000x = 2000/1000
x = 2

6 * 2 = 12
7 * 2 = 14

14 * 100 + 12 * 50 = 1400 + 600 = 2000