Odpowiedzi

2010-02-25T20:05:49+01:00
48 zł ------- 100 %
2,48 zł ----- X
-----------------------
x= 100* 2,48
____________ = 248
48 ______ = 5,8 %
48
2010-02-25T20:09:12+01:00
48-100%
2,48-x%
x=2,48*100/48=248/48=5,1(6)%
albo tak:
48-100%
45,25-x%
x=45,52*100/48=4552/48=94,8(3)%
48-2,48=45,52