Odpowiedzi

2010-03-11T21:05:08+01:00
A=87
b=?

100%-b
58%-87

8700=58b /:58

b=150
2010-03-11T21:06:40+01:00
A = p% b

87 - 58%
b - 100%

b = 100*87/58 = 150

:)
2010-03-11T21:07:29+01:00
58%b=87
58/100b=87
b=87*100/58
b=150
;))