Ranjeet drives his car at an average speed of 50 km/hr and reaches his destination in 8 hours. Rahman covers the same distance in 5 hours. If Ranjeet increases his speed by 10 km/hr and Rahman increases his speed by 20 km/hr, then what will be the difference in time taken by them to reach their destination?

• A. 2 hours 30 minutes
• B. 3 hours 40 minutes
• C. 3 hours 20 minutes
• D. 2 hours 40 minutes