Usually a ratio will compare two numbers by division
A = l * w
66 = l * (l - 5)
66 =
![l^{2}](https://tex.z-dn.net/?f=%20l%5E%7B2%7D%20)
-5l
0 =
![l^{2}](https://tex.z-dn.net/?f=%20l%5E%7B2%7D%20)
-5l - 66
l = 11 or 6 check which works.
A = 11 * 6, which fits.
length = 11 miles
width = 5 miles
It takes them 1 7/8 hrs to complete the job together.
How:
Fred = 3 hrs
Jason = 5 hrs
1/3x + 1/5x = 1/x
3x x 5x = 15 —> 3x/15 + 5x/15 = 15/15
3x + 5x = 8x —> 8x/15 = 1.875 = 1 7/8 hrs