Use the information provided below to calculate the following independently:$4\mathrm{.}1$ Break$-$even value, using the marginal income ratio $(4$ marks$)4\mathrm{.}2$ Margin of safety $($as a percentage, expressed to two decimal places$),$ using thebreak$-$even quantity $(4$ marks$)4\mathrm{.}3$ The sales volume required to achieve a net profit of R$1200000(4$ marks$)4\mathrm{.}4$ The total Marginal Income and Net Profit$/$Loss if the sales volume is $10\%$ less thanexpected $(4$ marks$)4\mathrm{.}5$ Break$-$even quantity if the selling price drops by R$20$ per unit and the total fixedcosts are R$992200.(4$ marks$)$INFORMATIONForecasted costs for the only product to be manufactured by Vierra Enterprises for $2025$ are as follows:RFixed manufacturing overheads $600000$Variable manufacturing overheads $800000$Direct materials $2400000$Direct labour $1000000$Fixed selling and administrative costs $400000$Sales commission $10\%$ of the sales priceExpected production and sales for $2025$ are $12000$ units with a selling price of R$500$ per unit.