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A man walks at $5$ kmph for $6$ hr and at $4$ km/h for $12$ hr. His average speed is

1. $4\frac{1}{3}$ km/h
2. $9\frac{2}{3}$ km/h
3. $9½$ km/h
4. $8$ km/h

=5×6+4×12 / 18
=4 1/3
Therefore the correct option is A
26 points

1
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