a) 100% = 50
10% = 5
20% = 5 + 5 = 10
b) 100% = 200
50% = 100
25% = 50
c) 100% = 150
200% = 150 + 150 = 300
d) 100% = 200 zł
50% = 100 zł
25% = 50 zł
10% = 20 zł
35% = 50 zł + 20 zł = 70 zł
e) 100% = 200 kg
10% = 20 kg
1% = 2 kg
5% = 10 kg
6% = 10 kg + 2 kg = 12 kg
f) 100% = 3000 zł
10% = 300 zł
5% = 150 zł
1% = 30 zł
19% = 300 zł + 150 zł + 30 zł + 30 zł + 30 zł + 30 zł = 450 zł + 120 zł = 570 zł
g) 100% = 45 min
10% = 4,5 min
1% = 0,45 min
12% = 4,5 min + 0,45 min + 0,45 min = 4,5 min + 0,90 min = 5,4 min
h) 100% = 250 g
10% = 25 g
5% = 12,5 g
1% = 2,5 g
7% = 12,5 g + 2,5 g + 2,5 g = 12,5 g + 5 g = 17,5 g