please show work

a. Last year Harrington Inc. had sales of $325,000 and a net income of $19,000, and its year-end assets were $250,000. The firm's total-debt-to-total-capital ratio was 45.0%. The firm finances using only debt and common equity and its total assets equal total invested capital. Based on the DuPont equation, what was the ROE? 4 b. You will need $100,000 on this date in 2031. If the funds/money/account will earn 6.5% annum, how much will you need to deposit today