Volume 4, Study Session 12, Reading 42, EoC Question # 17

This question asks the candidate to calculate the implied growth rate and ROE for a stock using the Justified P/B ratio. The answers in the back use the following formula for the calculations:

(ROE - r) / (r - g)

Isn’t this wrong? I thought the formula was a follows:

(ROE - g) / (r - g)

Am I crazy? What am I not understanding? No errata has been posted to date.