Odpowiedź:
telewizja: [tex]\frac{45}{150}[/tex] = [tex]\frac{15}{50} = \frac{30}{100}[/tex] = 30%
książka: [tex]\frac{33}{150} = \frac{11}{50} = \frac{22}{100}[/tex] = 22%
komputer: 150 - 33 - 45 - 24 = 48 / [tex]\frac{48}{150} = \frac{16}{50} = \frac{32}{100}[/tex] = 32%
