Q. Ramesh and Mukesh both drive to their new home 400 miles away. Ramesh drives  the family car at an average speed of 60 mph. Mukesh drives the removal truck at an average speed of  50  mph. During the journey, ramesh stops for a total of 1 hour and  20  minutes, mukesh stops for half as long. What is the difference in minutes between their arrival times ?

1. 80
2. 40
3. 65
4. 75