प्रत्येक राउंड में 10 नये प्रश्न प्रश्न : ( 5 of 10 ) At a certain speed a car covers a distance of 6 km in 2 hours. How much distance will it cover in 3 hour? (A) 7.2 km (B) 9 km (C) 13.5 km (D) 11.25 km