Răspuns :
a) [tex] \frac{20}{100} * \frac{2750}{1} = 550[/tex]
b) [tex] \frac{20}{100}* \frac{x}{1} = \frac{550}{1} => x = \frac{550}{1} * \frac{100}{20} = 2750[/tex]
b) [tex] \frac{20}{100}* \frac{x}{1} = \frac{550}{1} => x = \frac{550}{1} * \frac{100}{20} = 2750[/tex]