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?
1
6 hours 15 minutes
2
6 hours 45 minutes
3
7 hours
4
7 hours 30 minutes