Free cash flow valuation

How you guys are approaching that reading. Went through that twice, didn’t get much, now thinking of mugging all. And how come in question one of CFAI book, for $100 increase of NI cause FCFF to increase by 1100?? Any suggestion.

You might want to check the CFA errata. If I remember correctly this question was discussed on AF and the increase in FCFF was $100 not $1100.