A train travels 86 kilometers in 1 hours, and then 98 kilometers in 1 hours. What is its average speed?
1 answer:
Answer: average speed = 92 km/h
Explanation:
1) Data:
distance 1 = 86 km
time 1 = 1 hour
distance 2 = 98 km
time 2 = 1 hour
average speed = ?
2) Formula:
average speed = distance / time
3) distance = distance 1 + distance 2 = 86 km + 98 km = 184 km
4) time = time 1 + time 2 = 1 h + 1 h = 2h
5) average speed = 184 km / 2h = 92 km/h
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