The car covered 80 km in two hours and 160 km in the next two hours. Find the average speed.
| April 25, 2021 | education
1) First, find the total distance.
In order to add the first distance to the second distance.
s = s1 + s2 = 80 km + 160 km = (80 + 160) km = 240 km.
2) Find the total time.
t = t1 + t2 = 2 hours + 2 hours = (2 + 2) hours = 4 hours.
3) Find the average speed.
To do this, divide the total distance by the total time.
v = s / t = 240 km / h = 240/4 km / h = 120/2 km / h = 60 km / h.
Answer: the average speed is 60 km / h.
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