So if 1/2 inch corresponds to 6 feet, then what does 1 inch correspond to? i really need on this.

1/2=6, 6÷1/2=12, 1=12 because if 1/2×12=6, then 1×12=12

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.