EXERCISE 24-16B
(a) Controllable margin = ($3,200,000 – $2,500,000 – $400,000) = $300,000
ROI = $300,000 ÷ $5,000,000 = 6%
(b) (1) Contribution margin percentage is 21.88%, or ($700,000 ÷ $3,200,000)
Increase in controllable margin = $450,000 X 21.88% = $98,460
ROI = ($300,000 + $98,460) ÷ $5,000,000 = 8%
EXERCISE 24-17B
(a)
MEND AND DONNER DENTAL CLINIC
Preventive Services
Responsibility Report
For the Month Ended May 31, 2017
Difference
Favorable F
Unfavorable U
*Average investment = ($102,400 + $97,600) ÷ 2 = $100,000
Budget ROI = $9,900 ÷ $100,000