Answer: 3 days
Step-by-step explanation: She ran 400 meters 10 times, 400 times 10 is 4000 meters, so 4000 meters in one day. One thousand is a kilo. There are 4 one thousand's in 4000. Kali ran 4 kilometers (4000 meters) per day. So do 12 divide by 4 and you get 3. So your answer is 3 days.
