Question

15. A car runs 3 hours at a speed of 1
75 kilometers per hour and next 2
hours at the speed of 95 kilometers
per hour. Find the average speed of
the car for the 5 hour journey.​

Answer 1

3hr -> 75 km

2hr -> 80 km

avg. speed = total distance/ total time

then

speed = (75+80)/(3+2)

speed = 155/5

speed = 31 km/hr