Bottlebrush Company has operating income of $$129,024,$ invested assets of $$168,000,$ and sales of $$806,400.$

Use the DuPont formula to compute the return on investment, and show $($a$)$ the profit margin, $($b$)$ the investment turnover, and $($c$)$ the return on investment. Round answers to one decimal place.

a$.$ Profit margin fill in the blank $1$

$\%$

b$.$ Investment turnover fill in the blank $2$

c$.$ Return on investment fill in the blank $3$

$\%$