Tinsley, Incorporated, wishes to maintain a growth rate of $13\mathrm{.}75$ percent per year and a debt$-$equity ratio of $45.$ The profit margin is $4\mathrm{.}7$ percent, and total asset turnover is constant at $1\mathrm{.}17.$

a$.$ What is the dividend payout ratio?

Note: A negative answer should be indicated by a minus sign. Do not round intermediate calc ulations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,3216.$

b$.$ What is the maximum sustainable growth rate for this company?

Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places. e$.$g$.,3216.$

$\backslash$table$[[$a$.$ Dividend payout ratio,$0\mathrm{.}60,\%$