Gupta and Sharma both drive to their new home 600 km. away. Gupta drives the family car at an average speed of 65 km/hr. Sharma drives their office truck at an average speed of 50 km/hr. During the trip, Gupta stops for a total time of 2 hours and 20 minutes and Sharma stops for 90 minutes. What he approx. the difference in minutes of their arrival times?

Distance of new home= 600 km 

Gupta's average speed$=65 \mathrm{km}/\mathrm{hr}$

$\because$Time is taken by Gupta to cover 600 km $=\frac{600}{65}$

=9: 14(Approx.) 

Shanna's average speed$=50 \mathrm{km}/\mathrm{hr}$

$\because$Time is taken by Sharma to cover 600 km = 12 hrs. 

Total time taken by Gupta = 9 :14 + 2:20 

= 11: 34 min 

Total time is taken by Sharma 

= 12 + 1 :30 (90 min= 1 :30 min)

 = 13: 30 min 

Required difference =13: 30 - 11: 34 

=1 hr 56 min = 116 min