Question 4 ZZ Ltd are launching a new product and are trying to determine the selling price to maximise profit. Research has indicated that if the price was set at $30 per unit, 1,200 units would be sold. Reducing the price by E2 would see demand increase by 200 units. The variable cost per unit is expected to be $15 per unit. Required Calculate the selling price and quantity that would maximise profits. (6 marks)