FSA - ROE question

I saw something like this on the sample exam, curious if someone could help me figure this out. The problem gives the following ratios and asks for the ROE. S/A = 2.8 NI/S= 4 ROA = 11.2 How can you derive financial leverage from the given information? I can’t figure this out using 3 or 5 way dupont. Am I missing something?