Q2 A lash adjuster keeps pressure constant on engine valves, thereby increasing fuel efficiency in automobile engines. The relationship between price (p) and monthly demand (D) for lash adjusters made by the Wicks Company is given by this equation: D = (2,500 - p)/0.10. a) Using the equation given, find the demand (D) when total revenue (TR) is maximized. b) What important data are needed if maximum profit is desired? c) If the monthly fixed cost (Ct) is RM100 and variable cost (C) is RM30 per unit of production, estimate the expected reduction in profit (percentage), if the actual production is 10% higher than the optimal rate. Assume the optimal rate/production to be equal to the demand (D) obtained in part (a)