Answer:
30
Explanation:
Convert 12 km to metres
1000 m = 1 km
12 km = 12 × 1000/1
Distance = 12 000 m
Kali takes 1 day for 400 m, so
Time = 12 000 × 1/400
Time = 30 da
It will take Kali 30 da to run 12 km.
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