Refer to the Mini$-$S&P contract in Figure $22\mathrm{.}1.$ Assume the closing price for this day.

a$.$ If the margin requirement is $24\%$ of the futures price times the contract multiplier of $$50,$ how much must you deposit with your

Required margin deposit

Required margin deposit

b$.$ If the June futures price increases to $2605\mathrm{.}70,$ what percentage return will you earn on your investment if you entered the long side

of the contract at the price shown in the figure? $($Do not round intermediate calculations. Round your answer to $2$ decimal places.$)$

$\%$

c$.$ If the June futures price falls by $1\%,$ what is your percentage return? $($Negative amount should be indicated by a minus sign. Do not

round intermediate calculations. Round your answer to $2$ decimal places.$)$

Percentage return on net investment