A forensic scientist is analyzing the ink from a suspicious document using thin-layer chromatography (TLC). The resulting chromatogram, showing 'Spot X' and the solvent front, is shown below aligned next to a centimeter ruler.

Determine the Rf R_f\,Rf value for the component 'Spot X'. Give your answer to 2 decimal places.
Practise AQA GCSE Chemistry Purity, formulations and chromatography with exam-style questions for Foundation and Higher tier. 39 questions covering Pure substances, Formulations, and Chromatography, matched to the AQA GCSE Chemistry (8462) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.