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Mila [183]
3 years ago
11

You travel 80 km in the first 1.00 hour of a trip, 50 km in the next 0.50 hours, and 40 km in the final 0.25 hours. Calculate yo

ur average speed for the entire trip?
Mathematics
1 answer:
olchik [2.2K]3 years ago
4 0

The average speed is the ratio between the distance covered, and the time elapsed to cover that distance.

The total distance is the sum of the three distances covered:

d = 80km+50km+40km = 170km

Similarly, the total time elapsed is

1h + 0.5h + 0.25h = 1.75h

So, althought you didn't always travelled with the same speed, you globally covered 170km in 1.75 hours. This leads to an average speed of

\dfrac{170\text{km}}{1.75\text{h}} \approx 97.14 \dfrac{\text{km}}{\text{h}}

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