[tex]\displaystyle 25 \%~din~500= \frac{25}{100} \cdot 500= \frac{12500}{100} =125 \\ \\ 40 \%~din~200= \frac{40}{100} \cdot 200= \frac{8000}{100} =80 \\ \\ 20 \% ~din~225= \frac{20}{100} \cdot 225= \frac{4500}{100} =45 \\ \\ 5\%~din~1000= \frac{5}{100} \cdot 1000= \frac{5000}{100} =50 \\ \\ 10 \%~din ~234= \frac{10}{100} \cdot 234= \frac{2340}{100} =23,4 \\ \\ 50 \%~din~286= \frac{50}{100}\cdot 286= \frac{14300}{100} =143 \\ \\ 24 \%~din~300= \frac{24}{100} \cdot 300= \frac{7200}{100} =72 [/tex]
[tex]\displaystyle 30 \%~din~27= \frac{30}{100} \cdot 27= \frac{810}{100} =8,1 \\ \\ 60 \%~din~90= \frac{60}{100} \cdot 90= \frac{5400}{100} =54 \\ \\ 80 \%~din~400= \frac{80}{100} \cdot 400= \frac{32000}{100} =320[/tex]
