A car moves with a speed of 30km/hr for half an hr,25km/hr for 1he and 40km/hr for 2hrs. What is the average speed of car?

Answer 1

average speed = total distance travelled / total time

Total distance travelled
= 30km/h * 0.5 h + 25km/h * 1 2/3 h
+ 40km/h *2 h
= 136.667 km
Total time = 0.5+1 2/3 + 2
= 4.1667 h
Average speed = 136.667/4.1667
= 32.8 km/h

Answer 2

speed=30km/h
time=0.5hrs
distance=s*t
=15km
speed=25km/h
time=1hrs
distance=s*t
=25km
speed=40km/h
time=2hrs
distance=s*t
=80km
average speed= total distance/total
time taken
= (15+25+80)/(1+2+0.5)
= 120/3.5
= 34.28km/h.

Answer 3

the question is not what i ask