Salut!
Răspuns: 300 lei ✅
Notam cu x prețul obiectului
[tex] { \it{1)x - x \times 10\% = x {}^{(10} - \frac{ {}^{10)} 10x}{100} = \frac{10x - x}{10} = \frac{9x}{10} } } [/tex]
[tex] \it{2) \frac{9x}{10} - \frac{9x}{10} \times 10\% = \frac{9x {}^{(10} } {10} - \frac{9x {}^{} }{10} \times \frac{ {}^{10)} 10}{100} = \frac{90x}{100} - \frac{9x}{100} = \frac{81x}{100} } [/tex]
[tex] \it{ \frac{81x}{100} = 243} \\ \it{81x = 243 \times 100} \\ \it{81x = 24300} \\ \it{x = 24300 \div 81} \\ \it{ \boxed{x = 300 \: lei} } [/tex]
