If 3 muffins cost $1, then at that rate 1 muffin cost $3? True or false If it’s false, how much does one muffin cost?

Given:
3 muffins cost $1
Sol:.
1 muffin cost is:
[tex]\begin{gathered} 3\text{ muffin cost =\$1} \\ 1\text{ muffin cost =\$}\frac{1}{3} \end{gathered}[/tex]Rate of 1 muffin is $3 is False
Rate of 1 muffin is $1/3.