For fiscal year $2021,$ Costco Wholesale Corporation $($COST$)$ had a net profit margin of $2\mathrm{.}60\%,$ asset turnover of $3\mathrm{.}24,$ and a book equity multiplier of $3\mathrm{.}28.$ a$.$ Use this data to compute Costco's ROE using the DuPont Identity. b$.$ If Costco's managers wanted to increase its ROE by $1\mathrm{.}10$ percentage points, how much higher would their new asset turnover need to be$?$ c$.$ If Costco's net profit margin fell by $1\mathrm{.}10$ percentage points, by how much would their asset turnover need to increase to maintain their ROE? a$.$ Use this data to compute Costco's ROE using the DuPont Identity. Costco's ROE is $\%.($Round to two decimal places.$)$ If Costco$\text{'}$s net profit margin fell by $1\mathrm{.}05$ percentage$$ points, by how much would their asset turnover need to increase to maintain their$$ ROE?