A year ago, an investor bought $100$ shares of a mutual fund at $$7\mathrm{.}59$ per share. This year $,$ the fund has paid dividends of $$0\mathrm{.}79$ per share and had a capital gains distribution of $$0\mathrm{.}48$ per share. a$.$ Find the investor's holding period return, given that this no$-$load fund now has a net asset value of $$8\mathrm{.}24$ b$.$ Find the holding period return, assuming all the dividends and capital gains distributions are reinvested into additional shares of the fund at an average price of $$7\mathrm{.}87$ per share a$.$ Given that this no$-$load fund now has a net asset value of $$8\mathrm{.}24,$ the investor's holding period return is $\%($Round to two decimal places $.)$