Odpowiedzi

2009-11-06T19:53:09+01:00
B) 60zl * 100 / 80 = 75
100 - 75 = 25
2 5 2
2009-11-06T19:53:49+01:00
80zł - 60 zł = 20 zł
20/80 * 100% = 1/4 * 100% = 100/4% = 25%
Odp. b)
2 5 2
2009-11-06T19:56:02+01:00
B)80-100%
x - 25%
80*25=100*x
x=2000*100
x=20

80-20=60
1 5 1