51 ft I believe if you have the same question as I did..
If you would like to know two equivalent ratios for 12/60, you can calculate this using the following steps:
12/60 = 12/2 / 60/2 = 6/30
6/30 = 6/2 / 30/2 = 3/15
3/15 = 3/3 / 15/3 = 1/5
The result would be 6/30 or 3/15 or 1/5.
Your answer is choice (D), total equals $100.08: so you would want X to equal equal or greater than 132
Answer: A = 5
The Wise Orange found an image that may be helpful: