Simplify the following text for a Grade 7 native English-speaking person.
Original: CÃ rdoba is a city located near the geographical center of Argentina , in the foothills of the Sierras Chicas on the SuquÃ a River , about 700 k northwest of Buenos Aires .
Simplified: CÃ rdoba is a city located in the center of Argentina , about 700 km from Buenos Aires .