After repairing a scooter runs at a speed of 54 km/h and before repairing runs at speed of 48 km/h. It covers a certain distance in 6 hours after repairing. How much time will it take to cover the same distance before repairing?

• 6 hours 15 minutes
• 6 hours 45 minutes
• 7 hours
• 7 hours 30 minutes