XY Company has net income of $1000 million in the just-completed financial year. The book value of equity at the beginning of that year was $8000 million. The firm had capital expenditures of $1 800 million, depreciation of $1200 and an increase in working capital of $400 million during the year. The debt outstanding increased by $400 million during the year. a/ Estimate the equity reinvestment rate ! b/ Estimate the growth rate !