Fall 2019 q23 - ROR

Hi, could you give some insight into the answer for ROR in the Fall 2019 Q23? They use

while the wiki has the following formula, which I was trying to derive from the info given but couldn't

Are those two formulas equivalent?

Thanks!

Comments

  • Nevermind - sorry overlooked the no capital gains and no income from subs included in the question!

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