The car drove for 5 hours at a speed of 80 km / h, and spent 7 hours for the next 200 km.
| May 27, 2021 | education
The car drove for 5 hours at a speed of 80 km / h, and spent 7 hours for the next 200 km. What is the average travel speed along the way? Consider the movement straightforward.
In five hours, the car drove 5 h * 80 km / h = 400 km.
The path that the car traveled is equal to the sum of the paths that it traveled in 5 and 7 hours:
S = 400 km + 200 km = 600 km.
Time spent by the car on the way:
t = 5 hours + 7 hours = 12 hours.
Average vehicle speed:
Vc = S / t = 600 km / 12 h = 50 km / h (total distance divided by total time).
Answer: 50 km / h.
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