A car moves 300km at a speed of 45kmph and then it increase its speed to 60kmph to travel another 500m. Find average speed of car?
Answers
Answer:
Step-by-step explanation:
At first ; Speed of car = 45 km/h.
Distance travelled = 300 km.
Time taken = Distance / speed.
Time taken = 300/45
Time taken = 20 / 3 h
Second time ;
Speed of car = 60 km/h.
Distance travelled = 500 km.
Time taken = Distance / speed
Time taken = 500 / 60
Time taken = 25 / 3 h
Now,
Total distance = (300 + 500 km)
Total distance = 800 km.
And,
Total time = 20/3 + 25/3
Total time = 20 + 25 /3
Total time = 45/3
Total time = 15 h.
Average speed = Total distance / total time
Average speed = 800 / 15
Average speed = 53.34 km / h.
Answer:
53.34
Step-by-step explanation:
speed of car =45
distance travelled =300
time taken =distance /speed
timetaken =300/45
time taken =20/3
second
speed of car=60
distance travelled =500
time taken=distance/speed
time taken=500/60
time taken=25/3
total distance =(300+500)
total distance =800
total time=20'/3+25/3
total time =45/3
total time=15
average speed =800/15
average speed=53.34