1. se micoseara cu 20%⇒ 80%x
se scumpeste cu 12%⇒ 112%×80%x
[tex]\frac{112}{100}\times \frac{80}{100} \times x=190,8\\\\x=\frac{190800}{8\times 112} =\frac{190800}{896} =212,94[/tex]
2.
[tex]\frac{96}{100} \times \frac{95}{100}\times x=200\\\\ x=\frac{2000000}{96\times 95} =219,29[/tex]