It already is a fraction though. I assume you mean to simplify it. You can simplify fraction by taking out the greatest common factor(that they share) in the denominator and numerator. In this case the denominator and numerator share the factor 5. So you if you divide the numerator and denominator by 5 you get 3/10 or the simplest form of the fraction.
The answer is
The 13 stripes alternate red and white: 7 red and 6 white.
Each of 13 stripes is (39 in. / 13) = 3 in. wide.
4 of the 7 red stripes are 39 in. long. The other 3 are 65 in. long.
The total area (l*w) of the flag is (65 in.)*(39 in.)=2535 sq. in.
The red stripes make up an area (l*w) that is:
4*(area of short stripes) + 3*(area of long stripes)
Red area is 4*(39*3) + 3*(65*3) = 1053 sq in.
The fraction of the flag that is red is:
1053 sq. in. / 2535 sq. in.
It's easier to write if you convert 1/4 into 0.25.
![\frac{0.25mi}{1.6min} = \frac{1mi}{xmin}](https://tex.z-dn.net/?f=%20%5Cfrac%7B0.25mi%7D%7B1.6min%7D%20%3D%20%20%5Cfrac%7B1mi%7D%7Bxmin%7D%20)
Then you use algebra to find that he ran the mile in 6.4 minutes.