Al$-$Haya Company produces a product that is sold at a price of JD $200$ per unit. Variable costs per unit are JD $120$ and annual fixed costs JD $96,000..$ Required :$1.$ Compute contribution margin percentage $2.$ compute breakeven point in units and dinars $3.$ Compute the sales needed to achieve a target net income $100,000$ JD assuming the tax rate $50\%4.$compute margin of safety assume the company expect $2,000$ units sales $5.$explain the result in requirement $46.$calculate profit if the company expect to sell $1520$ units $7.$calculate operating leverage when the expected sales are $1500$ units $8.$ if the company sells $2000$ units monthly and it thinks to purchase advertisement for $3000$ $ $.$ it is expected that advirtisement will increase sales by $10\%.$ should the company purchase the advertisement $?$ show calculation