1.
a) 7% = 0,07
b) 28% = 0,28
c) 125% = 1,25
2.
28 -> 100%
21 -> ?
21/28 = 3/4 = 75%
3.
a) 160zl * 50% = 80zl
b) 170zl * 10% = 17zl
c) 4000zl * 1% = 40zl
d) 120zl * 25% = 30zl
4.
900 -> 100%
... -> 20%
900 * 20% = 180
20% = 180
5.
500zl - 30% = ?
10 % = 50zl -> 30 % = 150zl
500zl-150zl= 350zl
