Answer
Doesn't make sense.
Work Step by Step
$4000m=4km$, thus his average speed was $4km/h$ which cannot be really considered running that is an average speed for walking. Thus the statement doesn't make sense.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 9 - Measurement - 9.1 Measuring Length; The Metric System - Exercise Set 9.1 - Page 585: 92
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