Answer:
3 days
Step-by-step explanation:
First multiply 10 by 400 to find how many meters she runs each day.
10*400 = 4,000
1 kilometer = 1,000 meters
Now convert the meters to kilometers
To convert it to kilometers you divide 4,000 by 1,000, which equals 4 kilometers.
So she runs 4 kilometers each day.
Now divide 12 by 4 to find out how many days it will take to run 12 kilometers.
12/4 = 3 days
