Final answer:
The profit margin of Bottlebrush Company is 47.25% and the investment turnover is 1.1873. Therefore, the return on investment is 56.1%.
Step-by-step explanation:
To compute the return on investment using the DuPont formula, we need to calculate the profit margin and the investment turnover.
(a) Profit margin = Operating income / Sales = $79,662 / $168,600 = 0.4725 or 47.25%
(b) Investment turnover = Sales / Invested assets = $168,600 / $142,000 = 1.1873
(c) Return on investment = Profit margin x Investment turnover = 0.4725 x 1.1873 = 0.5614 or 56.1%