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 $1\mathrm{.}20$ percentage points, how much higher would their new asset turnover need to be$?$

c$.$ If Costco's net profit margin fell by $1\mathrm{.}20$ 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 $27\mathrm{.}63\%.($Round to two decimal places.$)$

b$.$ If Costco's managers wanted to increase its ROE by $1\mathrm{.}20$ percentage points, how much higher would their new asset turnover need to be$?$

The new asset turnover needs to be $,$ which is an increase of

$($Round to two decimal places.$)$