$1\mathrm{.}1$ REQUIRED Study the information provided below and calculate the following independently: $1\mathrm{.}1\mathrm{.}1$ Break$-$even quantity $(4$ marks$)1\mathrm{.}1\mathrm{.}2$ Total Marginal Income and Net Profit$/$Loss $1\mathrm{.}1\mathrm{.}3$ Break$-$even quantity if a sales commission of R$100$ per unit sold is introduced $(3$ marks$)(4$ marks$)1\mathrm{.}1\mathrm{.}4$ Total Marginal Income and Net Profit$/$Loss if the variable manufacturing costs increase by $10\%.(4$ marks$)$ INFORMATION Marmic Limited manufactures motors at one of its projects. The following information relates to the year ended $31$ December $2024,$ when $14000$ motors are expected to be produced and sold: Selling price per unit R$1000$ Direct materials cost per unit R$150$ Direct labour cost per unit R$100$ Variable manufacturing overheads costs per unit R$50$ Fixed manufacturing costs R$4000000$ Variable marketing and administration costs per unit R$100$ Fixed marketing and administration costs R$20000001\mathrm{.}2$ REQUIRED Use the information given below to calculate the labour cost to Garrick Enterprises in respect of Jane for the week ended $27$ January $2024.$ INFORMATION $(5$ marks$)$ Garrick Enterprises submitted the following information for the week ended $27$ January $2024$ in respect of an employee, Jane, employed at Project C: Hours worked Sunday Monday to Friday Saturday $3425$Additional information $$ The normal working week is Monday to Friday and comprises $40$ hours. $$ The normal wage rate is R$200$ per hour. $$ Overtime during the normal working week and on Saturdays is remunerated at $1\mathrm{.}5$ times the normal rate. $$ Overtime on Sundays is remunerated at twice the normal rate. $$ Garrick Enterprises contributes $8\%$ of Jane$$s normal pay to the pension fund and $1\%$ of her gross wage to the unemployment insurance fund.