Odpowiedź:
a) 75% = [tex]\frac{75}{100}[/tex]
[tex]\frac{75}{100}[/tex] × 120 = [tex]\frac{75x120}{100}[/tex] = [tex]\frac{9000}{100}[/tex] = 90 zł
b) 30% = [tex]\frac{30}{100}[/tex]
[tex]\frac{30}{100}[/tex] × 500 = [tex]\frac{15000}{100}[/tex] = 150 ton
c) 40% = [tex]\frac{40}{100}[/tex]
[tex]\frac{40}{100}[/tex] × 300 = [tex]\frac{12000}{100}[/tex] 120 zł
d) 200% = [tex]\frac{200}{100}[/tex]
[tex]\frac{200}{100}[/tex] × 3,50 = 2 × 3,50 = 7 zł
