[tex] \frac{12}{100} [/tex]*18000 = [tex] \frac{12*18000}{100} [/tex] = [tex] \frac{216000}{100} [/tex] = 2160
18000-2160 = 15840 pretul dupa reducerea cu 12%
[tex] \frac{9}{100} [/tex]*18000 = [tex] \frac{9*18000}{100} [/tex] = [tex] \frac{162000}{100} [/tex] = 1620
18000+1620 = 19620 pretul dupa majorarea cu 9%
[tex] \frac{12}{100} [/tex]*45000 = [tex] \frac{12*45000}{100} [/tex] = [tex] \frac{540000}{100} [/tex]= 5400
45000-5400 = 39600 pretul dupa reducerea cu 12%
[tex] \frac{9}{100} [/tex] * 45000 = [tex] \frac{9*45000}{100} [/tex] = [tex] \frac{405000}{100} [/tex] = 4050
45000+4050 = 49050 pretul dupa majorarea cu 9%