Question $3.$ Use the contribution margin $($CM$)$ per unit and percent approaches in CVP analysis.

Q$\mathrm{.}3\mathrm{.}1$ You work for a paper company, and they sell $100A4$ sized papers as a single unit for $$4\mathrm{.}5,$ their variable cost per unit is $$2\mathrm{.}8,$ and total fixed cost including labour is $$1,250.$ Determine their required sales ir $1$ lars for a targeted profit of $$4,000.$