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Cel mai inteligent răspuns!
2014-10-30T11:36:12+02:00
X-pretul initial
 \frac{92}{100} ×x
 \frac{85}{100} × \frac{92}{100} ×x=195,5
simplificam fractiile
85/100=17/20
92/100=23/25
 \frac{17}{20} × \frac{23}{25}×x=195,5⇒ \frac{391x}{400} =1 \frac{1955}{10}
391×10×x=400×1955⇒3910x=782000⇒x= \frac{782000}{3910} =200 lei
mersi.. ai simplificat 85 la 100? ca nu prea inteleg.
sau 85 : la 100?
da...am simplificat 85/100 cu 5
aa am inteles