Question

jai drove at 50 km/h for 3 hrs and at 60 km/h for next 2 hours what was his average speed for the whole journey

Answer 1

Answer:  54 km / hour

Step-by-step explanation:

For first three hours,

speed was 50km/hr,

distance covered in three hours = 3 x 50 = 150 km

For next two hours,

speed was 60km/hr,

distance covered in next two hours = 2 x 60 = 120km

average speed = total distance/total time

                         = 270 km / 3+2

                         = 270/5

                          = 54 km/hr

I hope it helps.  : - )