Ben lives in a condominium in downtown Toronto and works as a business analyst. He earns an annual take$-$home salary of $$48,000,$ and every month he spends $$1,100$ on rent, $$650$ on car expenses, $$100$ on a line$-$of$-$credit interest payment, $$650$ on miscellaneous expenses, and saves $$1,500.$

a$.$ What percent of his monthly take$-$home salary are his monthly expenses?

$\%$

Round to two decimal places

b$.$ Ben's financial advisor suggested he invest $27\mathrm{.}00\%$ of his monthly take$-$home salary in a mutual fund. What percent of his current savings would this amount be$?$