Question

[Retention Factor] For a component (spot) that has travelled 15 mm, what is the Rf value if the solvent has travelled 69 mm? Round your answer to two decimal places.

Also, For a component that has an R f value of 0.33, how far did the component (spot) travel if the solvent has travelled 259 mm?

The first part I got was .22 and the second would be 85.47 and I just wanna make sure that I'm correct.