Odpowiedzi

2010-03-07T16:07:52+01:00
2 5/8 : 7 1/2 = 21/8 : 15/2 = 21/8 * 2/15 = 42/120 = 21/60 = 7/20

7/20 = 0,35
0,35*100% = 35%