Answer
ROI for this year = 0.25 (Q6)
ROI from last year = 0.32 (Q3)
since ROI from this year is lower than last year, she would not pursue the investment
Work Step by Step
return on investment = 0.15 x $120 000 = $18 000
NOI = $30 000 (as calculated earlier)
since NOI is larger than RoR, the owners will want to pursue the investment