a car travels 135km at a speed of 45km per hrs and 250km at a speed of 50km per hrs. find its average speed.
Answers
Answer:
average speed = 48.125 km/Hr
Car Travels 135 km at a speed of 45 km/hour
Distance = Speed × Time
Time = \frac {Distance}{speed}
speed
Distance
Time 1 = \frac {135}{45}
45
135
Time 1 = 3 Hr
Time 2 = \frac {250}{50}
50
250
Time 2 = 5 Hr
Total Distance = 135 + 250 = 385 km/Hr
Total Time = 3 + 5 = 8 Hrs
Average Speed = \frac {Total Distance}{Total Time}
TotalTime
TotalDistance
= \frac {385}{8}
8
385
= 48.125 km/Hr
average speed = 48.125 km/h
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Answer:
average speed = 48.125 km/Hr
Step-by-step explanation:
Car Travels 135 km at a speed of 45 km/hour
Distance = Speed × Time
Time = {Distance}{speed}
speed
Distance
Time 1 = {135}{45}
45
135
Time 1 = 3 Hr
Time 2 = {250}{50}
50
250
Time 2 = 5 Hr
Total Distance = 135 + 250 = 385 km/Hr
Total Time = 3 + 5 = 8 Hrs
Average Speed = {Total Distance}{Total Time}
TotalTime
TotalDistance
= \frac {385}{8}
8
385
= 48.125 km/Hr
average speed = 48.125 km/Hr
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