Dover Engineering manufactures small engines that it sells to manufacturers who install them in products such as lawn mowers. The company currently manufactures all the parts used in these engines but is considering a proposal from an external supplier who wishes to supply the starter assemblies used in these engines. The starter assemblies are currently manufactured in Division 3 of Dover Engineering. The costs relating to the starter assemblies for the past 12 months were as follows: (Click the icon to view the costs.) Over the past year, Division 3 manufactured 150,000 starter assemblies. The average cost for each starter assembly is $10 ($1,500,000/150,000). Further analysis of manufacturing overhead revealed the following information. Of the total manufacturing overhead, only 25% is considered variable. Of the fixed portion, $262,500 is an allocation of general overhead that will remain unchanged for the company as a whole if production of the starter assemblies is discontinued. A further $175,000 of the fixed overhead is avoidable if production of the starter assemblies is discontinued. The balance of the current fixed overhead, $87,500, is the division manager's salary. If Dover Engineering discontinues production of the starter assemblies, the manager of Division 3 will be transferred to Division 2 at the same salary. This move will allow the company to save the $60,000 salary that would otherwise be paid to attract an outsider to this position. Required Production output in the coming year may be different from production output in the past year.) (Round the variable costs per unit to the nearest cent. Leave unused cells blank.) All Data Relevant Data Alternative 1: Make Alternative 2: Buy Alternative 1: Make Alternative 2: Buy Variable direct materials Variable direct manufacturing labour Variable manufacturing overhead Total variable costs Variable manufacturing costs per unit Fixed general manufacturing overhead Fixed overhead, avoidable Division 2 manager's salary Division 3 manager's salary Total fixed costs Purchase cost per unit, if bought from Topsfield Electronics