Answer:
Approximately 54.54% of race happened in the first week.
Explanation:
We are given the following in the question:
Length of bike race in three weeks = 2,200 miles
Race covered in first week = 1,200 miles
Percentage of race covered in first week =
![=\frac{\text{Race covered in first week}}{\text{Total length of race}}* 100\%\\\\=(1200)/(2200)* 100\%\\\\=54.54\%](https://img.qammunity.org/2021/formulas/mathematics/high-school/h5re8zp2tennudiykiwuirbxacdqa4n6k1.png)
Thus, approximately 54.54% of race happened in the first week.