The car drove on a straight road 80 km in 1 hour, and then another 220 km in 4 hours.

The car drove on a straight road 80 km in 1 hour, and then another 220 km in 4 hours. What is the speed along the entire path?

Given:

S1 = 80 kilometers – the length of the first section of the track;

t1 = 1 hour – the time during which the car drove the first section of the route;

S2 = 220 kilometers – the length of the second section of the route;

t2 = 4 hours – the time during which the car traveled the second section of the route.

It is required to determine v (km / h) – the speed of the vehicle along the entire path.

The total length of the path is:

S = S1 + S2 = 80 + 220 = 300 kilometers.

The total time of movement of the car is equal to:

t = t1 + t2 = 1 + 4 = 5 hours.

Then the speed of the car along the entire path is equal to:

v = S / t = 300/5 = 60 km / h.

Answer: the speed of the car all the way is 60 km / h.