THIS IS ALL ONE QUESTION SO PLEASE ANSWER ALL PARTS, THANK YOU

Exercise 18.23 Oslo Company's industrial photo-finishing division, Rho, incurred the following costs and expenses in the last period: Direct materials Direct labour Factory overhead General, selling, and administrative Totals Variable Fixed $199,000 151,000 69,000 $43,000 31,000 47,000 $450,000 $90,000 During the period, Rho produced 300,000 units of industrial photo prints, which were sold for $1.99 each. Oslo's investment in Rho was $480,000 and $680,000 at the beginning and ending of the year, respectively. Oslo's weighted average cost of capital is 15%. X Your answer is incorrect. Try again. Determine Rho's return on investment for the year. (Round answer to 2 decimal places, e.g. 25.25%.) ROI 6.89 x Your answer is incorrect. Try again. Compute Rho's residual income (loss) for the year. (Enter loss using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45).) Residual income (loss) x ................................ $L (47,000) Your answer is correct. How many industrial photo print units did Rho have to sell during the year to break even? (Round entry to whole amounts, e.g. 5,275.) Break even quantity 183674 units Your answer is incorrect. Try again. What was Rho's contribution margin for the year? X Contribution margin 130000