Home Demo reported the following results.

$\backslash$table$[[$Sales$,$$$95$ billion$],[$Net income,$$8$ billion$],[$Average total assets,$$54$ billion$]]$

$($a$)$ Compute Home Demo's return on assets.

$($b$)$ Is Home Demo's return on assets better than the $7\%$ return of Lows Hardware $($a competitor$)?$